well I switched from auctions to BIN's almost exclusively a few years back and my business has grown rapidly since that time. I think my prices are reasonable, I am almost always the best price on ebay at my starting price and I accept offers on 90% of my listings. I am never insulted by an offer, even when it's under half what I'm asking. I tend to just turn those down instead of counter-offering, but it doesn't hurt my feelings or something stupid like that.
I have a bunch of prewar going up over the next few days, I offer a PSA gradability guarantee. Everything I sell (unless otherwise stated) is guaranteed to receive a numerical grade from PSA. Look at my listings and send me a PM if you think my BIN's are insane, I'd be curious to hear from a knowledgeable group like N54 members!.
http://stores.ebay.com/Aquarian-Sports-Cards