Different companies, different prices. And everything is very individual. Depends on the type of foundation. No one can answer this question for sure. If you want quality and at the right price, I can give contacts to the waterproofing company Pom Waterproofing https://pomwaterproofing.ca/exterior-waterproofing/damp-proofing/ . Call, the masters will calculate everything for you, taking into account your wishes.