found this out there on the web ...
if you go to http://www.modelcarkits.com and click on Online Catalog,
then put in 'vanagon' (without the quotes) into the search box and
click on Search,
you get this:

X101-R/M-7633 ......  $7.95

now, R/M should mean Revell/Monogram, the folks that make the vanagon
camper kit. and the number 7633 IS the number of the 1/24th scale
(about 8 inches long) that Revell/Monogram makes/made. anyway, that's
a really cheap price ... hope it's not a misprint. shipping would
likely be about $6 or $7.

for those interested, the kit can be made with sliding door open or
closed, rear hatch open or closed, and pop-top up or down. front doors
do NOT open, and the underside of the bus appears to be an automatic
transmission, but the interior has a 4-speed gear shift. ;)  it has
round headlights (like the 80-85 buses) and is molded as an aircooled
(no lower radiator grill) but has a decal that will add the lower
grill. :)  interior is fairly detailed with cabinets and fridge and so
forth.

just in case you wanted a model of your camper. :)  not sure where you
can find 1/24th scale people. ;)

X101