I always hate to see 3DS Exclusives get turned into singles, but that is the case with Volcanic Eruptor, the 3DS Exclusive in Skylanders SWAP Force.
Best Buy has him listed at $9.99 and designated as a Pre-Order. That said, for those of you without a 3DS who want to practically add him to your collection, or just really big Eruptor fans, this is a welcome addition.