If he is still in business, you might want to look at Don Pencil's buffing system... it comes with three wheels, a 1 x 8 tpi spindle/shaft that the wheels screw into and the necessary buffing compounds... mine also has buffing balls, but don't remember if they were part of the system or I got them separately... can't speak to the cost though, mine was a miss-shipment when I order his hollowing system... I got the buffing system instead and when I contacted him, he laughed and said to just keep the buffing system and he would send me my hollowing system...I use the buffing system much more than the hollowing system now anyway.
One more thought, if you have a large box store, Lowe's or Home Depot or similar, you might be able to pick up generic buffing wheels, an allthread rod about a foot long, nuts and washers to fit either side of the buffer wheels and just make your own... I found 3 6" wheels at the local Lowers here that I use almost as much as the Don Pencil system... I keep the home made on on my little lathe for quick buffs of small items, bottle stoppers, pens (although it's been years since I made a pen), pepper mills, etc.... I have one of PSI's small chucks with 4 bars on it that I hold the allthread rod in place on the little lathe.