You might have not noticed but I sent you PM...
Anyway, I am a member of QCRCCC and I race regularly at QC Circle (and I come from Los Banos, Laguna).
I got back into RC early this year after a 10-year hiatus (needed the break to improve finances).
I had experienced both Nitro (on-road only) and Electric (off-road only). For me, running electric is more convenient and more cost-effective in the long run.
When I was still running nitro on-road, my major expense was fuel and tires. I don't recall the cost of the tires but for a gallon of fuel the cost was around Php1,500 back then (I don't know now). I budget a gallon of fuel into 4 half-day saturdays (I run about 0.95L per saturday at the Park Square 1 track back then to practice just to make my gallon last as long as possible).
In comparison, a pack of IB4200 batteries at Pitshop can be had for Php2,400 (current price) and I can use this battery for more than 6 months. My IB4200 cells still function great since I started racing last May (battery condition is less sensitive for off-road racers than for on-road racers).
Off-road tires last longer, too, when you only run them in soil.
Before I got back into eletric off-road RC racing last May, I had a few months just doing research on what's the current state of the RC industry. I had to find out what are the existing and new equipment and car kits.
Getting into RC can be like an "opening a can of worms" experience ($$$) so with what I had experienced, I'd like to help you be more informed so PM me back. I'd like to ask you a few questions as well as answer your questions.