okay, so deleting save doesn't reset the shop at all, so upon doing that, it becomes impossible to move onto water tiles, mountain tiles and lava tiles. Not sure if the next thing is a bug or not, but the cost for auto-drills amount and movement range is down to 1 love coin so to speak, which really is extremely cheap, but again not sure if you intended to lower the price that far. am going to check out the yyc version now. Follow up edit, same issue of store not resetting is in the yyc version of the game. secondary update, thanks for that, closing game after deleting data to reset the shop worked perfectly. as to prices, some suggestions of maybe 25-50-100 for terrain traversal starting with the bubble, to the spike wheel, and finally the adamantine coating, as well as for the upgrades to range at price increase happening at 10 and 20 respectively, since once you hit about 15 movement range you can gather even rather spread out drills for a variety of resources at once.
