Can someone explain stroker kits

not that I don't believe you but care to share where that kind of money goes?? even with aluminum heads, I am not sure where the thousands and thousands go???

Block work 1500 ?? Can vary
Stroker kit 2000-2200
Aluminum heads 1500-1800 (then potentially more work) $$$$$
Misc. = Valve train, cam and lifters, bearings, timing set, oiling, cooling, fuel supply ????

It adds up quickly.