Hi Sweetana3,
Yes, KAI scissors stay sharp for a very long time. A simple sharpness scissor test is this, and it works with any brand of scissors. Don't hold the fabric that you are cutting. If the fabric starts to move forward while cutting, it's time to sharpen your scissors.
I give a coupon good for one free sharpening with every scissor that I sell in my online store, and sometimes it takes 3 years for my non-manufacturing customers to use it.
Michael