As with anything, it is buyer beware. Know what you are buying and the best gauge is if you feel it is a fair price for what they are selling, a price YOU are willing to pay. We all have different guages.
I have see some things I'd love to have, but I feel the price is too steep for me. I don't judge them, as there are people who are willing to pay the price.
But there are others I have bought through this forum - especially magazines - that I feel have been very reasonable and I will buy again.
Our classifieds section is awesome. Just keep watching, you will eventually ind something that fits your needs at a price that is within your range.