I need some "guesstimations" from those in the know:

I'm days away from making a decision on purchasing an '87 to '90 Westy and I
have two choices to consider:

Option A  is the cheap route:  a decent van (from digital pics), site
unseen-- gambling on the mechanical condition and the amount of work to make
it reliable.

Option B the expensive route: great van, new drivetrain, warranty, it's been
gone through professionally and it's ready for action, I'll be able to see
it and test drive it.

Here's the rub:  If I chose the cheap option and was in the van for
$5,000.00 what's my delta figure to bring the cheap van up to spec? (given
that I have neither the time nor space to do the work myself-- it would all
have to be farmed out).   I realize this is dependant upon many many unknown
factors, but can anyone toss out a round figure?

The ultimate goal is to determine if the delta on the cheap option brings
the total cost in under the expensive option-- and will it be worth the
effort....

Any thoughts are greatly appreciated.