This is a great component and service is wonderful and quick. I recently upgraded from a previous version so it would be compatible with K2. I had trouble because of my database tables not the component. The support technician quickly fixed my issue and I didn't even lose previous links. He worked with me throughout the entire process, even over the weekend!
I use this component as the entire internal linking strategy for my blog. It saves me so much time and works very well. I highly recommend it, it is worth the price I paid.