When I just looked Raise said they weren’t accepting D+ gc for sale?
Do you personally know anyone with D+? You could offer them an excellent deal on the gc, like 25-30% off cost. The bad part about the gc is it is only usable for monthly subs and if you have an annual sub you save about 20% off the monthly price so you’ll probably have to beat that.
If you truly have no use for it there is always gifting it or donating it to some event to be used as a prize or raffle or something. The $200 becomes a sunk cost but you get something checked off a to-do list at least.
As far as being a dumb mistake, they happen to us all! If so many of us weren’t still scarred from the olden days of mixing up the
ShopDisney cards and Disney gift cards making us forever wary of different DGCs more of us would be in your boat.