I agree the sounds are harsh, and the costs could use some balance -- for example, because the cost of upgrades never goes up, it's always better to buy the banker than the cryptominer (because the cost to dollars per second ratio is always better on the lower cost units no matter how many you have).
Nevertheless, the graphics are clean and fun, the mouse over text was funny (the sponsor one got me), and with balanced mechanics and something to advancing layers (this didn't appear to change anything for me?), this would be a great clicker. Love it!
Note: none of this is to say I didn't have all the same issues in mine, which has no sounds to start with and much worse graphics than yours