Welcome to the board Chrystina, you might check the prices on eBay, craigslist or with a local quilt shop. Maybe you could trade it in on the new machine you plan to purchase? Maybe someone near you that does sewing machine repairs might be a buyer? Do you have a quilt guild near you? You could ask some of the members if anyone is interested in buying it from you? Good luck.
Happy Stitchin' crafty_linda_b sittin' & quiltin' on the rainy Cal-Ore border