My experience so far with guilds is 90% aren't worth bothering with in the 1st place. This isn't necessarily the total fault of the guild as much as it is with the way the things are set up in this game. The guild trading system as it is , is kind of a joke. Too bad the only ones laughing are the larger guilds. Selling to guildies to begin with is ridiculous but thats completely subjective I guess.
If I farmed whatever items , and say there were guildies that had limited play time , i'd rather give them than charge. If it helps someone else why not do something nice like that to support a guildy? I'm all for an in-game economy but at the expense of people in my guild? Not so much.
Ultimately , won't matter to me. I don't like the trading system the way it is anyways so I won't participate in it. I don't belong to guilds and won't. I'll just vendor stuff I don't need or takes up space. Can't see paying to sell things I got or made in the first place. Then to lose the "priviledge" or risk it on a week to week basis just floors me. All I need I can farm myself and ensure I have enough for repairs I guess. What else do I really need?