Pam's Song

There's really nothing you can do about items being worth more than max mesos short of actually making mesos worth more by sucking them out of the economy. Raising equip standards to make what used to be godly average doesn't solve anything.

This. The standard "godly" equips will always be over max meso.

Wouldn't this make the price of Attack Glove deflate like hell?

With Vega Scrolls, it cost about 4 * 9 = 36k NX to make an 18 Atk Glove, but you weren't guaranteed one.

Since this only activates when the scroll fails, it'd be really easy to make an 18 Atk glove wouldn't it?

It's easy to make any gear when you have 100% clean slate scrolls to wipe away any failure. The question then becomes is it economically feasible to do so, as Pam's Song's are an estimated 25-30k NX per, which, as many have said here, equates to roughly 375-450m per. You can make the call when you want to scroll an 18 att glove.