First of all I have to say if you own the VX and are worried about cost buy a Honda.
To rebuild the stock shocks it will cost more than any after market shocks.
I wanted the stock performance, and the stock shock will last longer than after market shocks. Pluss after the rebuild the cost to rebuild is significantly less because parts that were replaced make future rebuilds less expensive after the initial investment.
Matt will have to let you know the cost. The set I have was the first VX shocks he has rebuilt and he now he has a good idea what is needed for rebuilding a full set.
He said that they are time intensive, and he had to fabricate the valve covers because they are no longer available.
I also would like to have an additional set as a back up so I will be looking for another OEM set as spares. When I get them I'll be calling Matt to have them gone through.
Black or red had no difference on cost on the boots if I remember correctly. I didn't care what color they were and am happy that they are black since red really isn't what I'm after.
I will update this post on the performance as soon as I have the rebuilt shocks installed and a chance to get them off the pavement. This will mostlikely be when I visit Moab in May.