This forum has a policy against doing this they've recently en-acted. I really like you that's why I'm bringing your attention to this >_<
For what it's worth, the fact that bells can be duplicated too (so that'd get your last millions if you really wanted), I don't even see how the economy should change. I can dupe my item so there's now two, but you can dupe your 2m to buy it, so there's 4. The money has doubled the same way the products have. The supply of product and the supply of income have increased at an identical amount, so prices should go completely unaffected lol.