In Delhi you can get a male lab around 5 K to 10 K depends upon quality. Don't know about a saint bernard. Its a very giant breed and can cost more than a lab for rearing. A lab can costs monthly around 1000-1500 if u feed him home food with some dry packaged food. If feed only dry packaged food than it will costs higher. The vet bills also should be consider. shampoos, vitamins, and other expenses extra. In Delhi one visit of vet costs around 400- 500. so in early stage of puppy it is frequently to go to the vet. yearly vaccinations also keep in mind. A suggestion hope u dont mind-- if u are going to be a first time dog owner pls. don't consider a giant breed. It will cause much difficulty when it grown up fully adult. Thanks and have a happy pet.