Selling part of my Transformers collection: G1, BW, RID, etc… I'm to hold off on selling anything right now... Going out of Town...
What market are you talking about? Looks like you just lowered the prices a lot. They were insanely high, some are still rather high, but those prices are much better.
I got the original prices from shoppertron and Big Bad Toy Store and price guides. That was what they are selling for guys. The current prices are cheaper than most if not all online retailers.
Online retailers probably aren't the best place to get prices. I think ebay may be a better price guide. Just search the completed listings to get an idea of what the items are going for. I'll use your yellow Wal-Mart Landfill as an example. BBTS may be trying to sell it for $35-50, but it was $20 in stores, $15 on black friday when it was released. Stores here were plagued with them, they were clearanced for $7. On ebay they frequently go for $8-15. You will probably get a lot more interest using ebay as your price guide. It would take you an incredibly long time to move those items at those prices.
I paid full retail prices plus tax for all my collection I don't plan on selling anything for a loss. If takes a while to sell them it is okay, like I said I'm just selling them to make room, and also to find them a good home since I don't have any where to display them anymore.