I don't really have Twitter and was trying to contact you back about this, you asked me to give a bit of feedback and balancing on the game (1.7 version on steam). Here's a Desmos graph demonstrating which upgrades are extremely bad compared to the others:
https://www.desmos.com/calculator/hkpqjpdafw
For game balancing purposes I have a bunch more to say but I've been busy with my own projects and stuff right now so I'll try to follow up more later.
Edit: As you can see, it takes around 4 burger upgrades to be on par with certain other upgrades as an example. That's how bad some upgrades are in comparison to how good other upgrades are. I actually left a major calculation out, which is that perkill upgrades are less effective on boss waves where strawberries don't spawn, among other issues, but yeah. It's accurate otherwise.