Wait, did you not read the first line of my post? If you can make an alt a main character, you can transfer items and gold between characters. All you need is a friend willing to hold onto your stuff until you can transfer it to your new main.
Ah, thats what you meant, sorry, i've never actually done the trade thing so i had no clue what you where talking about.
Simply make it to where, any item traded from a recently deleted main that gets put onto an alt that then becomes a main (or a main that was an alt, switched, then items traded) are x1.5-x2-x4-x6(per loom) the cost to upkeep till level 25. Its a bit much, but it would cut back a lot i think.