I got this 70lb one a couple years ago. Seems like a good price
https://www.walmart.com/ip/CAP-Barbell-Cast-Iron-Kettlebell-Single-70-Pounds/52418221?selected=true
And this 53lb
https://www.walmart.com/ip/Diamond-Pro-KettleBells-9lbs-70-Lbs/47930408
24kg is the lowest you should start with most people say, and the 70lb is a good starting point if you’re really strong. I only got one of each because you can do most of the shit with one and not have to pay as much.
Simple and sinister is a program a lot of people do, I’m under the same circumstances as you and just started doing swings, pull-ups, and Turkish get ups one day, goblet squat, clean and jerk, and strict press the other. If you have any questions on programming feel free to ask, I’m by no means an expert but have gotten good results laddering my way up for reps until I can do as many reps as I want across all sets.
One last thing, once it gets too easy to swing, you can switch to one handed swing, then either cleans, or straight to the snatch. Just a way to keep progressing without having to buy a new one