I was going to buy this brush vac at HD but I thought $9 was outrageous for something so simple and cheap to make.  So, I bought two here and if the shipping is included you wind up paying about $3.50 per brush.  Since they don't last for ever having an extra is good. I can't see any difference in quality with the one that came with my Shop Vac.  I use them to suck up sanding dust before finishing furniture and wooden bowls-they work fine.