Selling on eBay - Using an Envelope?

I am trying to sell some runescape items on eBay.

Should I go about doing this by sending an envelope tracked. Inside the envelope will be instructions on the account i will leave the gold on. Is that a good way on trying to sell this item?

I've done that before and someone charged back 150 USD of rs gold for my inability to show proof because it was a virtual auction!