https://www.amazon.com/dp/B001DHQXX2/ref=cm_sw_r_cp_api_i_PIPFEbA49MBQ7
It’s $7.43 but mine was $6 something cause I got it “used” but it was brand new with just damaged packaging
Where did you get the 15W minimum number from?
Also, not that Amazon treats their employee's a whole lot better than walmart, but the same candle warmer is on amazon for the same price with free shipping.