However, although many of our clients are certain a drain survey is something they require, not many are sure of the cost of carrying out the process so, how much does a cctv drain survey cost? Stacy, the bathroom project looks great, thanks for all your help! Which supermarket is cheapest? Luckily, there are multiple ways of dealing with clogs before they become a problem, ranging from chemicals you can buy at the store to homemade remedies. I am writing to say thank you for the efficient service.