I don’t know what you’d consider not expensive, but keycapsss.com is based in Germany if I recall correctly.

Keygem, Oblotzky, Candykeys are all also in Germany I think, or else amazon or something for cheap ones?

Any of you Keebs know what that exact set is in the pic? I like it. Are they shine through? Looking to upgrade my moonlander.

Drop.com, Amazon, AliExpress, BangGood

Those in particular are called XDA. They’re good for nonstandard layouts because every key has the same profile, which is to say it looks the same from the side. Amazon and AliExpress should have plenty of designs in that profile. DSA, ZDA, and a few other are similar “unsculpted” or “flat” keycap profiles.

EDIT: They’re most likely a clone set called “Gentleman”