Sell now, WAP is already completely obsolete technology, in 2-3 year time it will be forgotten about, the value will severly decrease, most phones come with HTML browsers already and most phones use HTTP APN's rather than the older WAP APN. The main problem with WAP is it imposes a fixed limit of 16KB on responses from the server, so the page or "WAP card" is limited to this size so basicly the pages cannot hold a great deal of information, HTTP on the other hand is limitless so you can view regular web pages as you do on a PC.