Its an Auction so the 299 asking bid price likely wont be the selling price. Yes 299 is a good price for works shocks with remote rezi"s IF they happen to be sprung and valved for your weight and riding style., A top of the line shock that is set up for a 185 lb rider is great if your around 185 lbs. If your 260 lbs your then they will perform not so great. It costs APROX (race tech price) $650 buchs to have a shock revalved/rebuilt and new triple rate springs (with cross overs).
I sold some pep revalved zilla shocks to a member on this site for 150ish--granted they were not works triple rates
I am a big guy 6'5" 270 and have been looking for shocks for my raptor but they are all sprung 180-200 lb guys. So for me its more expensive to buy a good shock and pay an additional 650 to have it set up for me, than it would be to just buy new and have it set up right to begin with.
So 299 is a very good price if it fits YOU. IF i doesnt then keep looking. I wouldnt hesitate to buy from Q or anyone off e bay. I have only been stiffed once on ebay, and ebay refunded my money quickly.