I bought a similar tarp-shed from Sams a couple weeks ago. It is a different brand and looks better than the picture in the link though. Like the one in the link, it is 10'x20', and it also has a door on each end, windows on both sides, and a door on one sides. I put it up by myself in an afternoon, but it would have been a lot easier with two people. It should do a decent job of keeping off the sun/rain/snow while giving me a "protected" area to do maintenance, etc (I have no "real" garage at all).
As to negatives it is relatively thin fabric in my opinion, and it flaps around a bit in the stiff Oklahoma breeze. Lengthwise it fits my Kubota
L3400 + a box blade, but if my brush cutter is attached the last couple feet of it stick out the back (it's plenty wide though). The doors are zippered, and a minor pain to roll up, and I have to remember to push them up just a tad when I go in/out because my rops is 1-2" too tall to just power on in.
I'm hoping to get two years out of it, anything more would be bonus. All in all - for $200 I think it's a decent risk to take while I save up for a real garage/shed.