"hot or not" like scripts?

[Scherfi]

which are good and maybe free/cheap?
it also has to be easy to integrate in a existing website.

[Frank The Tank]

check www.hotscripts.com but more than likely you will have to pay some minimal fee to get a decent one

[Scherfi]

yeah, been there. most of them cost money.

i asked because i would like to know which of those script you guys would recommend. Please help!