Waterpik Cordless Advanced Water Flosser, Classic Blue

This is the best purchase i have ever made for my teeth, it cleans between my teeth, where food gets in between, and I can not remove with a toothbrush. It is very easy to use. I would give it 5 stars, if I could buy replacement tips. I have seen many on the Amazon site but they do not mention if they are compatible with the 563 model. I have also tried Waterpik direct. If the tips can no longer be purchased, then this item being one of the most expensive should be removed from sale, or at least advise that tips can no long be purchased. And yes I have seen some that say they are universal, and give many model numbers, but not this model 563.