Maybe the 30 day decrease in profit would be worth the additional units sold later (possibly at a slightly elevated price), due to the marketing of a perceived "deal".

I guess there's a lot of variables that could come into play (type of product, inventory, how many units need to sell over a time period to break even, etc), but it doesn't seem implausible, so much as it does dependent. But idk, I still can't figure out how the fuck magnets work, let alone accounting