>>7952039ROBOTS4LESS is good. I'm no expert, but prices are fair from what I saw and the variety is great.
I guess I have to be the one to mention Frank and Son. It's one of the best toy/collector places to go. Toy Arena is one of the most popular stores there. You can ask for discounts from other people, but Toy Arena doesn't budge on that unless you buy a lot.
They're only open Wednesday, Saturday and more recently Sunday since I just found out they moved to a former Sam's Club. It sounds like it's bigger and holy shit you can actually park there now. Fuck I need to visit again.