Was hoping Hollyhock was in the exchange, but sadly she isn't.
My wishlist for gold units is larger than the one I have for Rainbows (which currently features only Hollyhock and a couple of dupes), but 2,000 for a gold unit? Nahhh.
So I guess I'll go for the dupes, saves me some Rainbow Dressblooms, which I usually put around the 1500 NGold value as well.