any record (45/LP0) record collectors?

have a couple boxes of LP's to sell and a little over 600 45's. leaving out the rare versions, what is a general selling price for these? if you are at a show and a guy has boxes under the table, what are those going for? I think the neatest one I have is "Be Good to yourself at least once a day" with the fold out still intact. that may go up on the wall because it's so unique. and, yes, we have both kinds of music: country and western. and rock and/or roll and various others. Thanks!
I've been into records my entire life, and right now I have about 5,000-6,000 LP's, maybe 10k 45's, about 1,000 78's, and I agree with most of what has been posted already:
* Selling them one by one is a HUGE time suck
* Discogs is a pretty good site for buying & selling
* Unless they are in MINT condition, "commodity" LP's in "Good" to "VG" condition (Goldmine Record Ratings) go for about $2-$5 US each, and 45's for roughly the same, except for Christmas records (jukebox stuffers).

My advice: Keep what you like, sell whatever you feel may be we worth a few bucks (you'll have to be VERY honest with yourself here, as the Buyers will rip you a new one if your grading is off), offer-up whatever remains to your friends, and then take the remaining records to a local shop who deals in used records and either drop them off, or take whatever they offer for them and buy yourself a Happy Meal or three.