In honesty, the coil master kits are overrated. I purchased one and it isn't what it's cracked up to be.
The only two positives, is that everything you need is bundled in a case and the coil jig.
You can buy the coil jig separately and you could make a case for all your tools cheaper. Plus the tools you get aren't exactly premium, they feel one step up from being cheapys. An as other people have mentioned, the ohms reader is worthless. I kind of feel a lot of Youtuber reviewers, give positive reviews so in the future, more companies will send them their products, in hope of more promotion. Pretty sad really. Only reason I bought the kit was off the back of reviews from youtube. I'll learn for the future.
I mean, if you're looking for a complete kit, yeah sure go for the coil master kit, it does make things easier. Though if you don't mind putting in a little effort, for $80, I'm sure you could build yourself something better.