Reddit mentions of BEGLERI SIX2FIVE - BRASS - HAND MACHINED EDC GREEK WORRY FIDGET BEADS - MADE IN THE USA

A couple things are noteworthy:

The design you're looking at is common elsewhere for cheaper. Admittedly, it's a great design so feel free to go for it, but know that there are alternatives.

You're looking at brass/copper, which aren't the top of the line in terms of begleri materials. They're good, but they tarnish quickly, have a strong odor, they aren't hypoallergenic (you should make sure you aren't part of the 10% of people with a nickel allergy before touching them or you'll break out in an itchy rash) and they're frankly the cheaper alternative when it comes to metal weights. Some people love them, because the patina is classy, etc, but this is all important to know, just so your decision is informed.

Most high quality begleri are made of titanium. And, as you can see, the website you're looking at does titanium for a largely elevated price. Why titanium? It's odorless, hypoallergenic, and bloody indestructible - denting and dinging much less than metals like copper. It'll last forever. Not that others won't! But it's always going to look the least mangled compared to other sets. Other places do titanium much cheaper, and your guy's titanium set is only 25 grams anyway.

Which brings me to the weight. Weight is very important, especially for beginners! Too light and it will be impossible to control because it won't have enough momentum - you'll flop it around and feel powerless. Too heavy and your hands will ache like hell in the morning. It varies between people, but generally, the lowest you wanna go is 26, and the highest is probably ~30 til you've practiced. Your guy sells 35 gram sets, and 25 gram sets, but nothing in between. Both of those are probably okay weights, and I doubt it would significantly impede your progress if you got one, but one will just be very heavy and one will be very light, which is... fine? But not ideal.

All of that said:

Those ones look nice. If you're okay with the smell, tarnish, scratches and much-heavier-than-average weight, it legitimately looks worthy of your purchase. It's a great design.

Like others said, Aroundsquare has lots of safer choices, in nice solid odorless titanium, that'll last forever. But they also only do certain designs, none of which are like the one you're looking for.

ALSO, seriously, make sure you don't have a nickel allergy, that's really important. It'll save you a lot of money and a lot of itching if you do.