I'd be worried about build quality. The Xornet is about the same price, I'd go for that if you want a cheap quality mouse. Not tried one so I don't know about weight, but I'd imagine it feels a bit light and flimsy like most cheap mice.
The SteelSeries Kinzu might be a bit small, slightly more expensive as well, but it feels very solid and heavy for such a cheap mouse.
I might be something of a snob, but if I saw that Monoprice mouse in a store I would probably just ignore it right away.
Then again, I'm a snob and could be horribly wrong on this; it could be the perfect mouse for you, and at that price I'd say it's well worth a shot if you don't want to spend a lot.