Meritline.com offers this Stainless Steel Milk / Coffee Frother for $4.14. Coupon code "MLC248254030350N" cuts it to $1.99. With free shipping, that's $12 under the lowest total price we could for a similar unit elsewhere. (We saw it for a buck less in December, since expired). It operates on two AA batteries (not included).

Expect this item to take two to three weeks to arrive.