20 May 2009 at 23:55 - 47
Well, there are plenty of other items to sell.
And nothing would stop those that don't like or don't have time to make the ZQuests from buying the upgrade items instead the bags.
The difference would be that instead selling one Heavy bag for an insane price, you'll sell several runes for crazy prices.
Those that want to get the stuff by themselves can do so sowly size per size, those that don't want to wait can farm to pay them, those that sell the stuff will sell it anyways, and everyone is happy...
...provided they reduce the prices too, of course. A bag is meant to be used, not to be shown, and thus should not have the price of a huge prestige animal companion that is unlocked once per account.