Forgot all about the restoration side of things - will have to talk to our resident restorer when I get them about costs.
They look a bit daggy but that's more to do with the wanna be badger staining which fades over time. I'd give them a go first. I had an old boar knot in a travel brush that was really nice. A bit thin so I re-knotted it with TGN Best but it really didn't need it to be honest. Basically what I got in return is a somewhat thin badger knot.