I bought this from Skylight's website to use for both my business I planned to start and for personal use and just never used it. It's brand new and unused, just without the box. I believe these are selling for around $550-$600 on eBay and $600+ on Skylight's website currently.
Please keep in mind, because I have not actually used the product, I can't really tell you much about it other than the basics. You can find more information all about it here: https://myskylight.com/products/skylight-calendar-max/