depends on what car your putting it on, what mods youve done and a load of other factors really.. (like is the chip proven to give increased results etc...)
full exhaust system including manifold, then induction kit possibly pending on the type, then maybe a cam or 2 and possibly a chip.....
its easy selll really chips... unless you have proven before and after dyno results its a bit like buying a diet pill.... yeah you think your gonna lose weight cause your taking it.. you may feel good about it and yourself whilst doing so... but if your still eating the same craap and not doing keep fit and stuff your going no where.... lol... only way i can describe it...
(oh yeah im not a fat fooker by the way...)
just look into what your spending your cash on first
