The difference isn't that big. For a small contract like that at BWV, it's more like $150-$170 per point.
At GFV, about $180 per point.
So 30 points: About $4800 at BWV vs $5400 at VGF.
But now, look at it as cost per point per year
19 years left at BWV -- $8.42 per point, per year at BWV
41 years left at GFV -- $4.39 per point per year at VGF.
If you add in dues, the difference is even more stark. Basically, BWV is costing you twice as much as VGF.
As to the argument --what if you only want to keep DVC for 19 years. In that case, you could re-sell the VGF in 2042, and get a bunch of money back (possibly more than you paid in the first place).