Hello Shawtay!
As Pepiny says the only way so far is checking it on the market of each world, so it means you have to create more accounts based on the fact that account only alow allows you to have 20 character actives per account.
Depending on the server you want to delivery the Rare deliver the rare items will depend of the quantity on the number of characters you will have to make. If your final destination of the Rare items is an Optional PVP if the world is blocked or not, you should have not. Keep in mind for this conditions, these conditions because there is are some servers with especials special limitations of world transfers.