No, but what you can do is get more money than the black market with them.
Single-player has two choices.
1) Sell on the black market for the quoted price (usually 220-250), and you get the money right away.
2) Place your resources UP FOR BID on the market (lower left button). They will earn you the full price (usually 440-500), but only give that amount if and when the AI decides they want to buy them, and they pay the market value at the time of purchase, not of placing the resource up for sale, so loading up the market during a boom likely won't help you.
The third "set-price" button can be clicked but doesn't do anything.
#2 does not allow you to set your own price - it always remains at the current level as if you were going to buy the resources yourself. But you get a heck of a lot more money for it when someone eventually does buy your metal or crystal.
#2 also works much better on larger maps where there are a lot more enemy AI's that might wish to buy crystal or metal. I've used it to great effect with the Vasari and their refineries and harvesting upgrades to likely out-income TEC AI players.
-- Retro
