Yes they do exist :) I'm surprised you managed to beat the game without finding the shops on the second and third levels XD that's impressive. Thanks for the feedback!
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I struggled quite a bit. I had saved up 1500 gold, but I was only able to buy a bit of health and speed from the shop in the first level. When I played again, I realized the shop on level 2 was on the left after going down. I don’t remember the exact location in level 3, but I did manage to find it as well. It ended up being one of the few jam games I played all the way through without getting bored. Congrats again!