When BD has a sold out listing, go to their store and search for relevant keywords. In this case search heater, and you might find new listings for this, or other equivalent heaters at similar price points. This happens often for things Bullseye Deals sells.
However if you want it even cheaper, here they have some open box, $18 before the coupon and $14 after:
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However if you want it even cheaper, here they have some open box, $18 before the coupon and $14 after:
https://www.ebay.com/itm/175846346689?_nkw=heater&epid=10059087980&itmmeta=01J5W65PHYXJQT6MNA0BQB007N
https://www.ebay.com/itm/186108776036?_nkw=heater&epid=3063624205&itmmeta=01J5W65PHYGRF32ZWXV663CYW8
Thank you!