I still say one of these options for IM Epic 2.0 (not upgrade) weapons:
1. 30-day weapons that are bought, used and they disappear when that 30 days is up. Treat them like dungeon mounts and price them as other temporary virtual goods (cheapish!). These can't be reinforced or transcended. Once equipped they are bound. because of the kludgy way PlayWith designed Trinitys these can't be used on them (I don't know of a way to remove transmute stats once they are there beyond transmuting something else - idiotic design!).
2. Permanent character-bound weapons that bind the first time you equip them. Rohan has this function (I know because I used it when making GM-only weapons). These can be reinforced and transcended. These can be transmuted for trinitys.
In both cases make the stats as good as Upgrade 3 good so people will buy them. They should not be stupid expensive. Say 899 RPs for the 30-day ones and 4999 RPs for the permanent character bound ones.