It was generally "lots" of LP's for a set price, but they were from people with similar tastes who were thinning out their collections and who I knew cared for their vinyl. Gave me a chance to pick up a lot of things I never would have bought individually, but was always interested in having. Some were great, and some didn't live up to expectations.
As far as retail, I've bought most of my recent vinyl at conventions and there the prices seem to vary between $2 - $6, with collectible stuff commanding more. Even so, I'll come home with 15 or 20 LP's for around $100. Many of which may not be available on CD.
Jim C