have you ever seen an old jaguar or mustang on ebay that looks like crap but its completely original, and it sells for 2-4 grand? and then you see one that has been modded just slightly, new guard, maybe new pups, a refin is the most common, but the price drops to...... a grand, maybe 1,500.00.
basically thats what you just did, your is not vintage. but its definitly not original either. and the fact that its hone done, not all that great hurts it even more.
you might be able to get what you paid for it. you MIGHT be able to.