Ride it?
Why buy a lower bike when you want a standard bike?
I usually get a lot better part-ex price for my factory lowered than I would for standard as they have dozens of second hand std bikes, but have a waiting list for second hand lowered.
Just adjust your seat to match its not worth the expense to change it back. It's only 12mm suspension reduction.
Or try asking for a price to trade it in, they might surprise you