Speaking to Brad from LeftFootLeather, about these irons, he made a convincing argument about why these are worth the price. However, using only a KS Blade Punch Pricking Iron for the last year, I was unsure where I'd get the same looking stitch.
When these finally came in the post and using them for the first time, that wasn't the top challenge. I use the word challenge, because each pricking iron has a different weight, feel, tooth size, etc. So you do need to get used to it in your hand and the way you position it on your stitch line.
Despite these being somewhat heavyweight (which is a good thing) you need to be very delicate and careful when pricking. This is another good aspect of these irons, as they are make you practice patience when pricking. Especially if you prick quite quickly and don't take your sweet time.
The price of these was $90 for an 8 Tooth and a 2 Tooth with 3.0mm spacing.
For KS Blade, I'd have been paying double this price.
So if you're unsure about which to buy, I suggest to do your research and make an informed decision. But if you want my two cents, go for the Kevin Lee. You'll save a lot more than two cents!
Take a look at Alexandre Tritz's Instagram to see this iron in action with his watch straps, seriously good stuff.