This type of paper cutter demands precision. There can't be any play between the blade and the cutting edge. For $29 I don't think you're going to find that level of precision. You're going to find a lot of plastic, a lot of wobbliness and a lot of frustration.
I worked in a print shop for 10 years, and copy centers of various office supply stores for about the same amount of time *(sometimes simultaneously). I know about cutting paper.
This is the one you want if you're going to go for a lever-style trimmer. Though, even with one of these I find that anything more than 3 sheets of any kind of paper tends to make for a sloppy, imprecise cut.
The rotary trimmers are an order of magnitude more precise, easier to maintain, and safer.
The best advice I have if you have a project that involves a lot of paper cutting is this: Patience. If you need to do it yourself, don't try to cram as much paper into the thing as it can hold. 2-3 sheets at a time is all you're realistically going to get. Just understand that it's going to take a while to get the job done and settle into it. OR if you really have a large project, take it to a print shop and they'll use one of These Babies to get the job done.