With availability varying by ZIP code, BJ's retail locations offers members the Champion Power Equipment 7,500W-watt Portable Gas Generator, model no. 41410, for $569.99. (Non-members incur a $28.50 surcharge.) That's $332 under the best via-pickup price we could find for a Champion 7,500-watt generator purchased elsewhere. It features a 439cc Champion OHV 4-stroke air cooled engine with electric start, 7,500-watt running power (9,375 watts peak), 5.9-gallon gas tank, and low oil shutoff sensor.

It's also available for purchase online, but with a $171.22 shipping fee.