Tips for buying used Vinyl needed


I see there is a learning curve to buying used vinyl, can you please offer your wisdom and experience? In my recent attempts at buying used vinyl I have learned not to buy from someone who has stored their collection in the garage, dusty, moldy, and urine smells are gnarly. I am starting to look closer now that I have brought some home from my local shop and noticed imperfections in the vinyl itself, resulting in pops. Finding thirty and forty year old records in good condition is not as easy as I thought it would be.
bigwavedave
>>12-11-10: Tzh21y
Spindle hole can tell a lot.<<

Actually it tells you nothing in and of itself.

Move on.
Post removed 
Completely agree with Jazdoc - in fact it is early stereo you should avoid. Until they got it right there was an over-exaggerated "hole in the middle" image to stereo which is quite annoying to listen to. I much prefer mono for most early jazz.
I've tried to get into mono recordings, but I just can't. I'm sure there are many that sound great, but it just doesn't sound enjoyable to my ears. I didn't mean to start a stereo/mono argument, just wanted to point out that if you don't want mono, then you have to pay close attention to albums. To each his/her own.
I seek out and listen to mono recordings for the same reason I look for 78s - there is a large body of music available in these formats that you just won't find on stereo recordings. But unlike most 78s, mono LPs actually sound great. But in order to achieve the best you need to use a good (not necessarily expensive) mono cartridge. I won't go into a detailed explanation here - there are many, many previous posts that discuss this in detail.