I wouldn't trust anyone selling any of these Chinese electronics... I presume their shady until proven different, even with a very good seller rating. I'm not saying don't buy from them (I did), but just know the risks. In ALL of the ebay ads for the 5" GPS that I've seen, they show both the Android and WinCE versions in their pictures. Some may say it comes with WinCE, but it may not.
When I bought my 2nd one, it was advertised as WInCE, but I received the Android version. When I contacted the seller about this, I was told the WinCE version was OOS, even though the ad said there was US stock. I ended up keeping the Android version because I was afraid I'd never see the WinCE version... truthfulness and communication are not these seller's strong points. I still use it, and the Android version has some advantages over the WinCE, but I prefer the WinCE version for its glove friendly touchscreen.
I'm thinking about taking another shot at a WinCE version, but I'm also considering the Kyocera Duraforce XD. I believe it's been mentioned here, but it's also
discussed thoroughly over on ADV Riders.