I've been using this for awhile, and I think it's quite pricey for what it does, as Postman is free and offers much of the same functionality. That said, this has a great UI and the grouping feature is awesome for managing multiple projects, and in general it works very well. One of my favorite features is the ability to "turn off" certain parameters but keep them in the request, so you can switch them on/off when you want to change maybe a field or two easily without making an entirely new request.

I really would like to see the ability to type JSON out in the request body manually instead of the somewhat-clunky input field deal.