If you guys want to do maths for Simplysato, here are the upgrade formulas:
Mining Speed = Base Speed * Miner Level
Miner Cost (Upgrades tab) =
(if level == 1): Base price |
(if level > 1): Base price * (2 ^ (0.8 * Miner level))
Miner Upgrade Cost (Miners tab) = Base Miner price * 5 * (2 ^ (0.5 * (Miner level-1))
Though if you guys have any suggestions on how to improve these, feel free to post them! And remember that it can't be too easy, because then faucet won't be profitable enough

Thanks!
Level/Nr of miners owned Mining Speed Miner price Miner level increase
1 0,00004 50 x
2 0,00008 152 250
3 0,00012 264 354
4 0,00016 459 500
5 0,0002 800 707
6 0,00024 1393 1000
7 0,00028 2425 1414
8 0,00032 4222 2000
9 0,00036 7352 2828
10 0,0004 12800 4000
Looks like crap because Im not a master at forum formating
With this math it will be cheaper (total price) to have 5x level 1 miners than 1x level 5 miner. But, it will be cheaper (again, total price) to have 1x level 6 miner than 6x level 1 miners.
I dont really have any suggestions for improvements. Mabye add a minor increase in speed based on level, will make upgrading more interesting than buying a second miner, atleast in the start of the game. Mabye something like
Mining Speed = Base Speed * (Miner Level * 1,?)