You just never know.
I saw a pair of Pioneer 99A's there for $369.00 and thought it was a bit high since most were selling on Ebay for around $150.00
All of the sudden they started going for over $500.00 and one pair even made it to over $700.00
Now they seemed to tapper off to around $250.00
If you want to sell, just keep your eye on the prices.
When they shoot up........Hurry and sell em before they drop!