Lowe's offers the DEK Universal Generator Accessory Kit, model no. GENKIT1, for $104 with free shipping. (In-store pickup is also available.) Outside of the mention below, that's the lowest total in-stock price we could find by $48. The kit includes a 25-foot extension cord, 3-foot Y-adapter, SAE 10W30 motor oil, oil stabilizer, generator cover, and an oil filter.
A close price: Home Depot charges $104.30 with free shipping.