I have two belts - one is dressy and the other is casual.
The dressy belt is from Kore Essentials, and it costs $60:
Shop Kore Leather Gun Belts. Kore CC Gun Belts (1.5” wide) feature Power-Core Reinforced Center, hidden Track 40+ micro size positions. Kore ratchet belts give you a perfect sturdy fit for CCW. No sag or slag. AKA; Holster belt, pistol belt, sidearm belt, iwb, owb and appendix concealed carry...
www.koreessentials.com
The casual belt is from Thirty Dollar Gun Belt, and it costs $35:
Gun holster belt for serious everyday carry. Compare to bullhide & bridle leather. Sturdy for all concealed carry. Tactical or EDC. 14 oz. for all guns & mags.
www.30dollargunbelt.com
Both are excellent, heavy-construction belts. A very nice feature of the Kore Essentials belt is that it micro-adjusts, like Bassbob mentioned. That means if you go to a big dinner and eat too much, you can easily make the belt just a tad bigger, and you don't have to unbuckle it to do so.