Has anyone experience of using the handbag spa or handbag clinic or anyone else to replace a zip in a handbag? My very old but much loved Hobbs bag needs it's zip replaced and I cannot get to a linden store ( they offer repairs if you can) so need someone online to do it. I live in a rural area so online best. An idea of price and recommendations please. I've found myself looking for basically exactly the same bag so I think I should get it repaired as that's the only reason I don't use it. Thank you