You can sell them for
(deviantPOINTS), which can be converted into money, or real money!
You'll need to set up a commissions widget first. Go to the top right of your profile and click "edit page." Then scroll down to add a commission widget. You can then set your prices for however much you want to sell your art. One
= $0.80 USD when converted into money or $1 USD when it stays on dA.