lets break it down
b4.1-250, plus aluminum steering 20, hex conversion 10, aluminum hexes 25, big bore springs 10-25, retainers 10 to 40 depending on avid ghea or basic parts, c tower option 10, 350 on the mid range. plus about a hundred if you choose to buy their new big bores.
22- 270, plus threaded hinge pins front and rear 20, aluminum rear hexes 15, aluminum front arm mount 25, brass shim 15, aluminum rear block 30,, servo horn aluminum 10 (this is just a few hopups just an average of what most racers use on the car. i havent even added extra toe blocks, aluminum hubs, brass weights etc. total 385 and that is being generous
durango......well that is a another story.....to much to list lol. that is subject to who you buy hopups from or if you run the car with durango parts.
rb6- 450- car comes with xgear springs, complete aluminum steering setup, aluminum shock caps, threaded rear hinge pins, tungston carbide balls for diff and aluminum hexes.
so if you break it down the cars are very comparable in price. obviously this is subject to each person but overall we have to just be fair and look at what we have. of course you can make a rb6 a 700 dollar car but to be fair you can do that with any of them. just a different viewpoint and food for thought