Price depends on the local market i guess, but if you’re looking at 10+ years cars it shouldn’t be much difference price-wise. Toyotas are reliable indeed, but MB will beat it, older models have amazing reliability.
Some folks like WV, but I personally find it overpriced and uncomfortable. Quite ugly design wise if we look at T4/T5, but that’s speculation of course.
Get a chance to ride Vito/Viano :) Alphard is good, but not nearly as comfortable as MB. I bet price wise the difference is marginal for old models.