I'm searching to get an additional wii remote + nunchuck for my kids, and found this at big w website. It's original nintendo, but it's not motion plus.

New but without a box. Featured on eBay Australia's own the big deal as at Saturday 15 May from an Australian Seller with 24,000 feedback.

Possibly the Japanese model or a counterfeit, but it should be fine as an additional controller for when friends come around, so $20 may be worth the risk.