Thanks for the in-depth review! We definitely agree with the in-game tutorial suggestion. I don't think we've encountered the price matching issue or unpurchasable turrets- we'll definitely look into it. Good catch on the removing block/placing issue.
Glad you enjoyed and played for so long. I think it depends a bit on what monster upgrades you get how well you can cheese the game with blocks and freeze traps as there are upgrades that make it powerful enough to break blocks in one swipe or give it near immunity to freeze, but it is true we tuned the game on the easier side and could improve our system that adapts the monster upgrade to what you're building. Great suggestions.