I totally agree with sale prices rather than rebates. However, rebates are a marketing tactic used by companies to entice consumers to purchase their products. I read somewhere that a very large (unbelievable) percent of rebates are never submitted. Companies bank on consumers forgetting to mail in the rebate, losing parts of the submission requirements, etc. This means larger sales because of the rebate incentive to buy and a higher profit because of the lack of submissions.
I did rebates for many years going as far back as when the consumer had to send in the nt. wt. statement from say a box of Tide. (The UPC system didn't exist at first.) At one time, I had piles of bags and boxes of empty product packaging neat and organized. Trashed it all when the companies quit offering rebates on everyday products. Too bad because it was an additional savings beyond sales and coupons. I will call those "the good ole days"! Thankfully, sales and coupons have not been phased out.