If you are able to price match the Giant Tiger ad at your local Real Canadian Superstore in Ontario, then you can get an amazing deal on the large bag of Chipits this week!
Real Canadian Superstore has the 925g bag of Chipits advertised for $10.99, and there is an in-store bonus of 2,000 PC Optimum points per bag. Giant Tiger has the same size bag advertised for $8.77 this week, so if you can get that price at Superstore, with the $2 value of the points you receive the cost is just $6.77. The Giant Tiger flyer mentions the size as 925g and the Superstore flyer says 955g, but these are likely an older size and a newer size of the same product as it has probably been subject to shrinkflation. 925g is probably the new and only size for this larger bag.
Also, check your cash back apps this week as I believe there is an offer for Chipits out there. Just make sure it is valid for this size.