That's not a bad payout for the lv 30s range. As far as flying out to sell the stuff you get or deposit it, I found a way around that. Just make an alt that lives in IF or some major city. Keep them near a mailbox and whenever another character gets full of good items, stop in town, sell the junk, and mail the rest to the alt. The items will stay in the mail for 30 days so you have a temporary bank. Just be sure to mail, sell, or store the items before the month's end and its a great way to keep track of items. It also stops the need for going back to town to sell items for your main characters.
Also I actually found an even better place to mine Mithril if you're in the mid 40's level range. I kept it a secret for a long time but I'm sharing it with our forums community now. You can check it out in my post HERE.