There are rebates apparently, but you need an offer code:
I had a Molson only in 18-packs or greater "offer code": 20-94585
SAVE UP TO $8.00 AFTER REBATE Buy ONE (1) 18-pack of Molson Canadian or Molson Canadian 67 (bottles or cans) and save $7.00. Buy ONE (1) 24-pack or larger of Molson Canadian or Molson Canadian 67 (bottles or cans) and save $8.00. Limit 4 per household.
03/12/2020 – 04/19/2020
More rebates listed from a local beer store HERE
. I'm assuming these are valid anywhere in the US...