Noob LT1 questions

[MoTie]

I'm new to the forum as well as the ltx platform, although I've been doing my homework on the subject, and I was raised on small block Chevy (although I know the differences between gens I-II SBC), I was wondering if any of you guys with more familiarity with lt1's in particular could tell me what a good price on a used lt1 would be, what the best year(s)/which sources would be the ones to keep an eye out for, and what to look for in buying one in which I can't hear run (besides a compression test of course)? Sorry for my apparent lack of knowledge on the subject, any help would be appreciated thoroughly, thanks!