[Dollarama] Dollarama - $2 K'Nex Super Mario blind bags
The good news is that by looking at the codes on the back, you know which figure is inside. I got the figure decoding information from this website, and its dead simple.
The big printed code on the back of the bag, 0517223, has one number underlined for each character. So for example, the underlined 0 would be Mario. The character-to-code order is:
5 Ghostbuster Luigi
1 Purple Toad
7 Cat Peach
2 Red Yoshi
2 Cannon Luigi
3 Mario Maker
So if you want Ghostbuster Luigi, look for the underlined 5. You can also tell which character is in which bag by look and feel in some cases, I could easily tell the Cannon Luigi by the square inside and the green hue from the piece on the bag itself. I haven't seen these in many Dollaramas yet, so good luck!