HTC still hasn't gotten official with the exact price or release date for its HTC Advantage X7510 handheld, but that hasn't stopped a number of retailers from putting the device up for pre-order, and at quite a range of prices to boot. As Pocketables points out, UK retailers Clove Technology and eXpansys each have the X7510 up for £595 and £700, respectively, although neither are making any promises about when it'll ship. US retailers are also offering the device at similarly varied prices, ranging from $800 at GearTrade to $1,300 at Smart Mobile Gadgets and On The Go Solutions (Google Product Search even turns one retailer by the name of PrestoMart listing it at $550, although that link unsurprisingly goes to a blank product page). For its part, Pocketables speculates that the $800 price tag is closest to the official one (which probably isn't too far off base), but we'll just have to wait for HTC to give us the final word on that.