Seems really expensive.
Tires can be bought for about $90 a pop, plus shipping. So figure maybe $500 there. Can be found on CL for cheaper from time to time.
Rim's likely do NOT have a safety bead. Some 16.5" rim's do, most do not. These are also not the hummer split rim bead locked jobbies. So you're likely limited to about 20 PSI for airing down, these big, heavy tires won't flex that much.
I think it's too expensive myself, especially since you'd have to have them re-centered if you wanted to run them on 6 bolt Toyota axles. Centers are $44.95 for flat, $64.95 for pressed. That's for the Hummer rim, not sure if they'll work on these or not. But regardless, that's an additional $325 to recenter them (not including labor costs).
You can buy H1 rims from Trail Worth Fab for about the same price, with beadlock insert, rock rim, and re-centered for about the same cost.
H1 rims you can pick up for dirt cheap (darn near free), and other steel 16.5" rims you can pick up for real cheap. Heck even the "fancy" ones sold by 4WP are only $75 a rim.
So yeah, that deal is too spendy. Half that price and it might be interesting....