I have used Kyozou for at least 10 years. Their support staff have always been quick to respond and very helpful. Their program has made it very easy to keep all my inventory organized and I have saved a lot of time by using them. I do like that I can keep my inventory organized across several selling platforms. Using just Kyozou to adjust things in each selling market makes things quite easy to update. As far as Cons go, I feel like the price is a little high, but when I compare to their competition I find that they are one of the cheaper options so have settled on accepting their billing. I also feel like their UI is not the easiest to navigate, but once you figure it out, it comes second-nature to navigate. Also, I don't rate anyone 5 stars unless it absolutely blows my mind!