As a matter of fact, in 93 the Econoline didn't come with a V-6, it came with the 300 cubic inch (4.9 liter) straight truck six. These were one of Ford's great engines, lots of low end torque. They were even used in a few dump trucks, and most UPS trucks had these engines, before UPS went to diesels. If well maintained, I believe this engine could easily go 200, 000 - 250,000 miles without major problems.
I would want to see the Carfax they mentioned before making a final decision, but right now this is looking pretty good to me.
I couldn't find anything on Apex Motors with the Better Business Bureau, or any of the online review sites. Might just mean they are a newish dealership . . .
BTW, I ran the VIN # and it's an E250, so it's the 3/4 ton . . .