I would advice you to get a lab for that type of work a good ess would not have the temprement to stay still for long.but to answer you tops £350 dog £400 bitch thats kc reg, chipped, docked and first jabs to be collected at eight weeks old.whatever you go for good luck.forgot to add if you can get a trained dog of any type for that price then there has to be summit wrong with it a trained dog is worth it's weight in gold