I'll be going again to Jumbo today, to take advantage of the Jumbochecks promo mainly buying the 100% cashback products like 8x1 liter of milk, Skip washing powder, Skip washing liquid, toilet paper (two brands at 100% cashback), champagne (something you'll always use sooner or later, can be kept for a few years), etc.
I think I'll purchase 5 or 6 times that way until tomorrow. I'll likely spend 6000/7000 pesos but I'll get back the same amount in Jumbochecks (will focus on the 100% cashback products only), mainly buying stuff I'll use anyway and that can be kept for months.
You can use up to 10 Jumbochecks for a purchase. For those who have received Jumbochecks, you have noticed you can get up to 3 Jumbochecks for 2 different periods. I guess there's a Jumbocheck for each of the 30/50/100% cashback categories (hence better focus on the 100% cashback products).
With those Jumbochecks, I'll likely buy electronics and if you research a bit the prices, Jumbo offers sometimes prices very close to the best prices found on Mercadolibre. One example: the Edifier speakers M1380 (
https://www.jumboaca...mprar/Home.aspx), Jumbo price is 999$, best ML price is 920$ (about 8% cheaper, which is not much).
It might sound a bit cheap to enter/reenter Jumbo to buy the very same products but if in the end you can save like 600 USD on an electronic product you would have bought anyway, paying a price very close to the best Mercadolibre one, then it's not that stupid!