Plus the rent or mortgage, labor for showing it to countless tire-kickers, insurance while it's in their
possession. I agree, it only takes a couple minutes to do the paperwork, but the overhead adds up. But still, on a failed consignment, there are risks on both sides. No sales means no commission, transfer back should be free.
Ouch!
Consignments are nothing but gravy, all profit for the dealer.
More than likely the consignment agreement states x number of days, if you remove it early you pay the transfer fee. What does the agreement say?