Coins are a real problem. There's a limited amount of them, and it seems that even if you earn all the achievements, you still won't have enough money to buy everything.
Apparently, with the release of patch 1.8, the rules for obtaining them have changed slightly.
Now, 1 coin is awarded for every 100 experience points earned on a played map.
In general, now my stash is growing rapidly - already over 50 thousand, without any effort.
However, the stash is limited - it can hold a maximum of 75,000.
But still, it's great. You can buy everything from the altar)
But I'm not in a hurry. Maybe something expensive will be sold with the new add-on.