Just came across this. Get your dog returned if it gets lost. Usually costs £30.00 at a vet.
You can expect to pay £20-£30 to have your dog microchipped at the vet. Dogs Trust currently provides a FREE microchipping service at our Rehoming Centres; please contact directly to book a mutually convenient time. Alternatively you may want to contact your Local Authority Dog Warden or campaign manager for information on any local microchipping schemes that may be running.