Endless Gold Mine: win-win

Alright, so we always have thought that an Endless Gold Mine would be SUPER awesome. But to think that the Endless Copper Mine costs 20,000 gems; how much would an Endless Gold Mine cost? 40,000? 120,000? No one would spend crazy amounts of gems for it.

Here's an idea that, I think, would give BB a bit of MANY player's hard-earned paychecks by encouraging gem spending and get us what we want:

Provide 2, or so, Endless Gold Mines for a reasonable amount of gems (I suggest 20,000), and then provide the upgrades for ONLY gems (I suggest 2,000 gems per level). Oh, and time-limits would apply (2:30, 1 hour, 1 day, 7 day waiting).

We get the Holy Grail and BB gets our money from both the original purchase AND repeat money for the upgrades.

Win-win, right? What say ye?

put it at one mill cost to buy from merchant and 10k for each timed upgrade and then they will consider forwarding it to the devs :p. anything less and you must be joking lol.

and the let's not forget the endless iron mines, too hehe