>>1198678Ford E-Series (pictured) Dodge B-Series, or the Chevy Express/GMC Savanna. Just your basic big American van.
They sold millions of them so they're everywhere and parts are dirt fucking cheap.
VW T2s like in the OP picture are the romantic ideal of most van dwellers but they're gutless, expensive to buy, expensive to fix and very small.
If you want something small but cheaper, go with a Dodge Caravan or something Japanese.
But a Ford or Chevy full-size will give you the most bang for your buck in terms of maintenance costs and living space.