What's frustrating is that between the labor and parts, they are clearly able to execute. However that is then compromised by some choices that really didn't save that much cost.
That said, if you're willing to live with an older, higher mileage van and can accept some level of janky, these things can be put into service. Just don't pay the same amount you would for one done to a higher standard.
If you plan on using one in snow, check that they got the front drive shaft angles right, or used a double cardan. For trail use that's actually not that big a deal.
'99 EB ex ENG KSWB news van, low rent 4x4 conversion (mostly fixed by now), home built interior.