Target offers the Mr. Bar-B-Q 18" Cast Iron Wok, model no. 06106X, for $15.99. (Amazon charges the same with free shipping for Prime members, although it's temporarily out of stock.) Choose in-store pickup to dodge the $4 shipping fee. That's tied with our mention from a year ago and the lowest price we could find by $5. It can be used on a standard cooktop or on the grill.