seeing as I run vegacomb on my vega
(and I definitely recommend it!) I saved a bit on this docking station lark by adding a usb 4-port hub to my vega's existing usb slot and switching to host-mode.
Also the new micro-SD card I got for more storage had an SD->microSD adapter so my PC can copy data to the vega quicker than usb-storage (which is shockingly slow at about 1.5mb/s), other nice things about this are that my vega already has HDMI out on the side and a place for the power plug so the dock is not needed at all!
My point being not to buy the dock; Because it's not really nesecarry, especially when the offical folio case which I do have has a nice clip to help the tablet stand in landscape mode and all it adds really is 3,usb's which you can get 4 of if you spend £5-10 on a hub at argos