I think different consignment stores will have different terms, as far as the amount that they take and the amount they pay you. I know that is the case with clothing consignment stores. You might call around to different ones - I know there are several in Dallas, but I don't know the names of any of them - sorry. I do know they will set the price based on what they think it will sell for, used, so you won't get anything like the amount you paid for it.
Another option would be to sell it on Craigslist. That way, you set the price and you keep all the money. I have only used Craigslist once, to sell a huge Christmas tree. It sold very quickly. I just read through ads for similar items before I wrote my ad. I made sure to mention that it was pick-up only - no delivery.