Why not plan a big yard sale and call it a Quilter's Delight? Put that on direction signs (will get the quilters who did not see ads) and advertise on Craig's List and grocery stores butteton boards, etc. Be sure to have some help as I am sure you would get a lot of quilters looking for fabric. I do not buy on ebay, so do not pay attention to what sells and what doesn't. Good luck, take care.
Linda
P S if you have so much fabric and want to do a 2 day sale, maybe you can use a church social hall and give church a donation or whatever they cost to rent it.