I bought it used. It came with the long wheel rail that didn't work well with my F800ST. I ended up buying Baxley Sport Wheel chock which has rubber stops preventing the chock from sliding. Very easy to use on a trailer or in a garage (my bike didn't have a centre stand). I brought my GS from MI where I bought it on the same trailer but unfortunately I couldn't use the chock since it's not designed for GS's bigger wheel so I used that long rail instead and tied it down as good as I could. Oh, and before anybody suggest that I should've flown there and ride it back, it was in the middle of nowhere, well at least not very convenient location to travel to.
The best part about MC10 trailer - 390 lbs only (aluminium). You could pull it with just about anything.
I also believe that covering bike with a tarp or even a bike cover is not a good idea as bike's paint might get scratched due to "flapping in the wind".