This arrived this afternoon (I intend to use it for my original FDIM out of my car):
The u-blox chip looks a bit different to the other one (I wonder which one is a Chinese clone?!):
Both work though, and the new one has a USB port which configures a COM port on a PC so you can use it that way too.
$14.99 on eBay (the other guy ran out of stock).