I want to know where I can purchase some quality, paid mods for IPB. No specific category I'd like to look at, just some paid mods and where I can get them.

IPS offers paid mods(read that custom mods)..apart from the already available gallery and blog..but I am afraid we are not supposed to discuss them here

Heeh not to be harsh on IPS, but don't get a custom made one from them.

how much it's cost a hack ??

If your asking about IPS, it will be high no matter what, if your asking me I don't do personal modifications.

IPS do made to order mods. Not sure what you are actually after, there are a few specific mod sites out there Michael_C's invision pages, ibrpoarcade etc.

Sorry you would need to be specific about what you want.