I've noticed something that I'm not sure if it's a bug, or just maybe a mechanic that needs some clarifying.
I got to a shop. It was selling a bag of gold for 120g. Using a bag of gold gets you 100g. I had 6 bronze coins; the first increase income by 20%, the other 5 should boost that to 30%. So I bought the bag, expecting that this would wind up with me 10g up; -120g for buying the bag, + (100g +30% =) 130g.
Instead I wound up 20 down, as though the income hadn't modified. I don't know if that means the bronze coins don't work at all, or if it doesn't affect gold gained from gold bags (and if the latter, if that's intentional or not); either way, it's a little confusing.
Not the most critical thing, just thought I'd mention it :)
Oh, good to know. You've understood perfectly how it works, but there must be a bug. Bronze coins normally increase hp healing, not gold gains. It's gold coins that increase gold gains (just like green coins, which improve everything). I'll check the descriptions, effects, etc. anyway. I'll look into it and fix it.
But if you had gold coins, then you should have made a profit. (That's why it costs 120 gold coins when it only yields 100 gold coins in base value.)
Thanks again <3
Altego