The price of this software is very cheap, so it's not expensive at all! It has helped me to solve problems with my website that I couldn't find any other way until now (I've been working in web development since 2010).
Maybe there are some things you can do better or easier than others but overall everything works fine as expected by myself when using packet zoom services during our projects together :) We have used their CDN/DNS solution which was great because we could test if changes would work properly before deploying them live without having downtime from customers' perspective while still being able use DNS tools like dig etc..