That's $50 above MSRP. I won't reward scalping and you shouldn't either.
Wal-Mart and Target both have a constant supply of the Mario N3DS bundle for $149.99. It's an exclusive to those two stores.
I'm in the New York metro area. Specifically, White Plains, NY, which is a bit north of the city. We've got no shortage of Targets and Wal-Marts here.
No Target store within 100 miles of me has that bundle in stock. (I remember checking a few weeks ago; a not-so-local store had a few left but no other store in the area did.) No Walmart within 50 miles has it in stock. Neither store has it available for shipping. So I'm not sure what you mean by "constant supply."
I have never seen a company give such a big finger to their most loyal fans.