if you already have items on your alt character there is an easier method. i only put bulk items on my alt such as stacks of wood/cotton bolls/nuggets. if you already have a stack on your alt and want to transfer more then just put the item up as a search for a stack of them for one gil. if someone wants to sell you a stack for 1 gil while signing into your alt then so be it you got free mats almost. this way you are searching for a stack of iron nuggets for 1 gil instead of selling it in wards for 1 gil.

the way you suggested worked well pre search patch, but it is very risky to do that now. i stopped doing it after i lost a full stack of toad skins.