I bought this after reading reviews of other similarly priced guillotines, and was swayed by the specs stating it cuts up to 10 sheets. That's very unlikely. I tried cutting 180gsm paper (equivalent to 2-3 sheets of copier paper at once) and it left tears and folded edges.
I've tried cutting single sheets of standard (80gsm) paper too. No matter how I try, quickly or slowly, I can't get a clean cut.
I also found that after trimming it was difficult to remove the work because the cutting head was still very close to the end of the page, gripping the corner. It would benefit from a longer platform.