the pipe was like $18 on towerhobbies. i can't say it was worth it though. performance stays the same (in my experiance, some people swear by those pipes), but it makes the engine sound AWESOME. so if you're into that kinda thing it's a good pipe, otherwise save your money. i really like the paris turbo ring pipe. also, if you have a pro .15 rustler (or any side-exhaust engine) then get the mip 360 stinger. i have one on my pro 15 rustler and it's incredible. performance goes way up and it sounds really cool (even better than the rc10gt pipe!!)