I recently went to a client who had contacted a locksmithing site off the internet and had quoted £80 per lock to change on a patio door set.Now firstly £80 per lock is more than expensive. I'd call that down right scandalous. i'd charge £70 for the two. That's a massive £90 difference.Secondly they had quoted without even seeing what the problem was in the first place. It turned out that both mechanisms were broken and needed changing. Now if this company was going to charge £180 just to change the cylinders then who knows what the overall cost would of been to do the job properly.With that in mind it makes me shake my head in distgust that companies like that are charging those kind of prices and more frustrating clients are paying them. what's more there are guys like me out there offering to do the job at a far more affordable price, can guarantee the work and have the experience to do the job correctly.ere.