So what if people sell platinum and gold plans for gil?

[Aegis]

I think that the intended purpose was so that the people being bonded could buy a bracelet to gift to their partner (in the case of one person buying both). I think this whole hassle could be solved by making the bracelets tradable, but disabling the ability to add/put gil into the trade box -- basically you can only trade them, but not receive any gil during the trade. It would also discourage people from trying to do it, since most would be worried that once the person got the bracelet, they'd just leave and not do another trade (or 20 more trades in the case of the 20mil person).

Then the traded item becomes demimateria or allagan pieces, or the trade is done by moogle mail which doesn't have a delivery limit (I sent 5 mill from one of my accounts to the other this way once). As long as you have the agreement in your chat log then the GMs will take action if the other person doesn't fulfill their end.