Just buy some Chinese tires off ebay.
I got 4- 30x9.5 Achilles mud terrains shipped for my 2010 for 370$. Comparing tire wear to how many miles I drove that truck before selling it... they would of lasted about 30k miles.
For my '21 I got 4 kenda klever m/t's in 255/75/17 off ebay shipped for 570$. 50k mile warranty on those. While kenda isn't exactly a well known automotive tire manufacturer, they really know their stuff when it comes to powersports tires and such. I'm extremely happy with them so far. Wouldn't hesitate to buy again.
I want to, but I'm not going to comment make a snide comment on the chinese tires. I've actually read good reviews on some of them, guess it largely depends on what you expect and are using them for.
I've said it before and I'll say it again. I'd never buy or use a tire marketed under the name Achilles. I don't care how good of a tire is is, that's like tempting fate.
Moving on,
Nitto Ridge Grappler and Falken Wild Peak AT3WS are some of the best alternatives to BFG KO2.
I'll add another vote for the A/T3W. Don't know how the compare or performance wise to the BFG KO2, since I haven't bought tires in a few years and never ran the KO2 at all. I have had the A/T3W on three trucks now. Two sets (A/T and A/T3W) on my 99 Ranger, a set on my 68 F-100, and the F-250 I just got came with a set. I picked up a stick in the side wall of the first set on the Ranger right about time to replace them, other than that they've done great. I think any A/T tire would have had the same results from the stick in a sidewall.