Before this place and Yogurt vi opened up, you couldn't say Cleveland really had froyo. Now you can't say it doesn't.
Menchie's has a pretty standard self-serve setup. The flavor selection is good (at least 10 different flavors) and rotates regularly, so even if you're a frequent visitor there's always variety. You can also taste-test the flavors as much as you want before filling up. The selection of dry toppings is great. However the fruit bar is more limited than at some places nearby (ie. Yogurt Vi - which has mochi pieces, a favorite of my friends).
Price-wise, Menchie's seems about the same as--or possibly a little cheaper than--other self-serve froyo places I've been (this includes places on the West coast, where the froyo craze has been around for a while). I never really kept track of exact pricing.
Overall, Menchie's is pretty standard among self-serve froyo places. The additional perks that put it above average include the free membership deal for repeat offenders ($5 on every $50 you save), and the fact that most of their flavors are kosher, if you have those dietary concerns.
Yay for froyo near Cleveland!