I read a rebate offer like that a couple of weeks ago. I kind of picked it apart.
"Limit one rebate per product"
"Limit one product per customer"
"Limit one product per customer per household"
I think I was looking at one from KitchenAid for accessories for stand mixers, and I figured, according to their wording, that I'd qualify for a rebate on each of up to three different ones.