Ridder... this is my `personal` opinion,
The price is not reasonable for a 5 months old Mega with 1 gallon on it while you only get xtra inexpensive parts. 1 gallon is at least 4 1/2 hours used engine. I do not know hwo`s R/C being priced over your side (becuase goverment rules such as taxes, customs, etc, etc makes all the different) but in Asia it cost around USD210 without a pipe while the ABC set (p/s) is around USD55 (which is the cheapes among all other performance engine!).

Here is the Mega item list for your refferences,

MEGA ZX12 ENGINES
MGA-201000 MEGA ZX12 LEGAL SPORT
MGA-201001 MEGA ZX12 LEGAL RACE
MGA-201003 MEGA ZX12 OUTLAW RACE
MGA-201004 MEGA POWERPACK ZX12 SPORT
MGA-201005 MEGA POWERPACK ZX12 RACE
MGA-201006 MEGA POWERPACK ZX12 RACE OUTLAW

MEGA ZX15 SMALL BLOCK
MGA-201200 MEGA ZX15 SMALL BLOCK
MGA-201201 MEGA POWERPACK ZX15 RACE 5P

MEGA ZX21 ENGINES SMALL BLOCK
MGA-201300 MEGA ZX21 S.B. SPORTS (TMAXX)
MGA-201301 MEGA ZX21 S.B. SPORTS PULL-START

MEGA ZX21 OFF-ROAD
MGA-201400 MEGA ZX21 OFFROAD SPORT
MGA-201401 MEGA ZX21 OFFROAD SPORT PULLSTART
MGA-201402 MEGA ZX21 OFFROAD RACE
MGA-201403 MEGA POWERPACK ZX21 OFR SPORT
MGA-201404 MEGA POWERPACK ZX21 OFR RACE

MEGA ZX21 ON-ROAD
MGA-201500 MEGA ZX21 SPORTS
MGA-201501 MEGA ZX21 RACE
MGA-201502 MEGA POWERPACK ZX21 SPORTS
MGA-201503 MEGA POWERPACK ZX21 RACE
MGA-201504 MEGA POWERPACK ZX21 RACE OUTLAW
MGA-201505 MEGA ZX-21 Rallygame Race

MEGA ZX26 ENGINE (MONSTER-TRUCKS)
MGA-201600 MEGA ZX26 ENGINE SPORT
MGA-201601 MEGA ZX26 ENGINE SPORT PULLSTART

MEGA GLOWPLUGS
MGA-200150 Glowplug 5 HOT
MGA-200151 Glowplug conical 5 COLD
MGA-200152 Glowplug conical 5 HOT
MGA-200160 Glowplug 6 MED
MGA-200161 Glowplug conical 6 COLD
MGA-200162 Glowplug conical 6 HOT
MGA-200170 Glowplug 7 COLD
MGA-200171 Glowplug conical 7 COLD
MGA-200172 Glowplug conical 7 HOT

MEGA MERCHANDISING
MGA-200201 Decal-sheet Mega ZX MGAies
MGA-200203 Decal-Sheet Mega A5 Size
MGA-200901 T-shirt Mega grey-orange (S)
MGA-200902 T-shirt Mega grey-orange (M)
MGA-200903 T-shirt Mega grey-orange (L)
MGA-200904 T-shirt Mega grey-orange (XL)
MGA-200905 T-shirt Mega grey-orange (XXL)
MGA-200906 MEGA small bag (black orange)
MGA-200907 Lanyard Mega
MGA-200908 Lady-T Mega black-orange (xs)
MGA-200909 Lady-T Mega black-orange (s)
MGA-200910 Lady-T Mega black-orange (m)
MGA-200911 Lady-T Mega black-orange (l)

MEGA SPARE PARTS, PIPES
MGA-2183 Exhaust M12 TP04 black
MGA-2184 Exhaust M12 TP04 polished
MGA-2193 Exhaust spring long M12 (3)
MGA-2195 Manifold NM SX12 RE
MGA-2196 Exhaust seal NM SX12 (5)
MGA-2198 Exhaust tubing M12
MGA-2199 Exhaust tubing M12 shaped
MGA-2284 Exhaust-adaptor spring long (3)
MGA-2684 Exhaust seal NR SX-15 (5)
MGA-2795 Exhaust seal NR SX-21 (5)

MGA-200301 Air-filter oil (tube) (2)
MGA-200302 Airfilter foam D= 10 with oil
MGA-200303 Ins-box induction noise silencer D=10
MGA-200304 Airfilter foam D= 15 with oil
MGA-200305 Ins-box induction noise silencer D=15
MGA-200307 Airfilter M21 Offroad+oil

MGA-202001 Abc set ZX-S .21 off-road
MGA-202002 Abc set ZX-R .21 on-road
MGA-202003 Abc set ZX-R .21 off-road
MGA-202004 InMGAt head conic ZX21-S on-road/rally
MGA-202005 InMGAt head ZX.21 off-road
MGA-202006 Head screw ZX21 (4)
MGA-202016 Wrist pin clip ZX12/15 (2)
MGA-202017 Pin ref. Cilinder all
MGA-202018 Wrist pin 12 RE
MGA-202019 Abc-set ZX21 Sport onroad
MGA-202020 Abc set ZX26 pull start monster
MGA-202021 Abc set ZX26 monster
MGA-202022 Conrod ZX21 Race
MGA-202023 Wrist pin ZX15
MGA-202024 Abc set ZX-12 RE OUTLAW 5+2 turbo
MGA-202025 Abc set ZX12 Sport 3P turbo
MGA-202026 Abc set ZX15 RE S.B. 5+2 turbo
MGA-202027 Conrod 12/15
MGA-202028 Wrist pin ZX21 All D= 4,4
MGA-202029 Wrist pin clip 21/26 (2)
MGA-202030 Wrist pin ZX26
MGA-202031 Conrod ZX26
MGA-202032 Conrod ZX21 Sport
MGA-202033 Head gasket 21 23x16,4x0,1
MGA-202034 Head gasket 21 23x16,4x0,2
MGA-202035 Head screw ZX26 (6pcs)
MGA-202036 Head gasket ZX12 0.1
MGA-202037 Head gasket ZX12 0.2
MGA-202038 O-ring crankcase ZX21/26 (2)
MGA-202039 O-ring crankcase ZX12/21OFR (2)
MGA-202040 Head screws ZX12/15 (4)
MGA-202041 InMGAt head ZX26
MGA-202042 InMGAt head ZX15 turbo
MGA-202043 Head gasket ZX15 0.1
MGA-202044 Head gasket ZX15 0.2
MGA-202045 InMGAt head ZX12 turbo
MGA-202046 Head gasket ZX26 23x18x0,1
MGA-202047 Head gasket ZX26 23x18x0,2
MGA-202048 Ball bearing front ZX21/26
MGA-202049 Cone ZX21/26
MGA-202050 Ball bearing rear ZX21 14MM
MGA-202051 Crankshaft ZX26 14MM
MGA-202052 Crankshaft ZX26 pull start 14MM
MGA-202053 Ball bearing rear ZX12/15 12MM
MGA-202054 Crankshaft ZX21 Sport 14MM
MGA-202055 Crankshaft ZX21 OFF Race 14MM
MGA-202056 Ball bearing ZX12/15 front
MGA-202057 Cone 12/15 RE
MGA-202058 Crankshaft ZX 12/15 RE
MGA-202059 O-ring plate ZX21/26
MGA-202060 Carb.lock.pin ZX21/26
MGA-202061 Backplate ZX21 S
MGA-202062 Backplate ZX21 R
MGA-202063 Backplate ZX12/15
MGA-202064 Rear cover o-ring ZX12/15
MGA-202065 O-ring carb lock pin ZX21/26 (2)
MGA-202066 Carb Locking ZX12/15
MGA-202067 Pull start ZX26
MGA-202068 Rear cover ZX26 pull start
MGA-202069 Pull start axle ZX 26
MGA-202070 Fuel fitting torque all
MGA-202071 Plate screw (4) all
MGA-202072 O-ring max needle (2)
MGA-202073 O-ring 4x2 torque (6)
MGA-202074 Air screw spring
MGA-202075 Carb. Air screw slide ZX12
MGA-202076 Carb. Air screw D= 7/8/9
MGA-202077 Washer carbur.torque (2)
MGA-202078 Screw 3x3
MGA-202079 Needle max ZX21/26
MGA-202080 Needle min D.9
MGA-202081 Carb. Alu body o-ring venturi
MGA-202082 Needle in ZX12/15 slide
MGA-202083 Drum slide ZX 12/15
MGA-202084 Ball joint alu carb
MGA-202085 Carburettor nylon D=9
MGA-202086 Rubber bellow ZX12 slide
MGA-202087 Venturi carburettor D=9
MGA-202088 Needle max 12/15
MGA-202089 Rubber bellow ZX21
MGA-202090 Venturi carburettor D=7
MGA-202091 Venturi carburettor D=8
MGA-202092 Carburettor nylon 8MM
MGA-202093 Carburettor nylon OFR D=7/8/9
MGA-202094 Screw pull start (3)
MGA-202095 Carburettor D= 5.5 slide
MGA-202096 Carburettor D= 6.4 slide
MGA-202097 Carburettor body slide 5.4MM
MGA-202098 O-ring carb. Lock pin 12 RE
MGA-202099 Needle max support

MGA-202101 Seal silicone ZX21
MGA-202102 Spring short inline (3)
MGA-202103 Spring long ZX12-15
MGA-202104 Spring long ZX21-26 OFR
MGA-202105 Seal silicone ZX12
MGA-202107 Spring long ZX21-26
MGA-202108 Tubing ZX21-26 silicone
MGA-202109 Cooling head orange ZX12
MGA-202111 Coolinghead orange ZX12 big
MGA-202113 Coolinghead ZX-15
MGA-202114 Crankcase ZX12
MGA-202115 Cooling head orange ZX21 OFR
MGA-202116 Crankcase ZX21 OFR
MGA-202117 Cooling head orange ZX21
MGA-202119 Crankcase ZX26
MGA-202120 Cooling head orange ZX26
MGA-202121 Crankcase ZX21 onroad
MGA-202122 Crankshaft ZX21 Race 14MM
MGA-202123 crankcase ZX-15
MGA-202124 abcset ZX21 OFR RX
MGA-202125 case ZX21 OFR RX
MGA-202126 insert ZX21 OFR RX
MGA-202127 head ZX21 OFR RX
MGA-202128 head ZX21 SB
MGA-202129 abcset ZX21 SB
MGA-202130 crankcase ZX21 SB
MGA-202131 bearing front ZX21 SB
MGA-202132 bearing main ZX21 SB
MGA-202133 pullstart adaptor ZX21 SB
MGA-202134 crankshaft ZX21 SB
MGA-202135 backplate pullstart ZX21 SB
MGA-202136 throttle ball 4mm ZX21 SB
MGA-202137 carburetor 8mm ZX21 SB
MGA-202138 engine mount ZX21 SB
MGA-202139 screw 3x10 elec ZX21 SB
MGA-202140 pullstart hex adaptor ZX21 SB
MGA-202141 seal extra M1215 for NR manifold
MGA-202142 o-ring-revision-set M12/15
MGA-202143 o-ring revision-set M21
MGA-202144 Coolinghead big OFR.21 (4S)
MGA-202145 Insert ZX12 Sport std

MGA-203002 Pipe-set inline ZX12 2607 poli conic
MGA-203004 Pipe inline ZX12 2607 poli
MGA-203007 Adaptor inline 12-15 poli conic
MGA-203011 Pipe-set 21 inline 9897 poli short
MGA-203014 Pipe-set 21 inline 2002 poli short 3C
MGA-203017 Pipe inline 21 9897 poli
MGA-203019 Pipe 21 inline 2002 poli
MGA-203021 Adaptor 21 inline short poli
MGA-203024 Pipe-set 21 OFR inline 069 poli
MGA-203025 Pipe 21 OFR 069 inline poli
MGA-203028 Adaptor 21 OFR inline
MGA-203030 Pipe-set M12 Inline-poli E-2602
MGA-203031 Pipe M12 Inline-poli E-2602
MGA-203032 Exhaust adaptor M12 Inline poli
MGA-203039 Pipe-set M21 Inline-poli E-2018 3C
MGA-203040 Pipe M21 Inline-poli E-2018 3C
MGA-203041 Exhaust adaptor M12 Inline Conic poli
MGA-203042 Adaptor M21 Inline conic-polished
MGA-203043 Pipe-set M21 Inline-poli Outlaw
MGA-203044 Pipe M21 Inline-poli Outlaw
MGA-203045 pipe-set inline M21 2033 poli
MGA-203046 pipe inline M21 2033 poli
MGA-203047 adaptor M12 inline poli conic/2 NR
MGA-203048 pipeset inline M12 E2602 conic NR