Hello, I am the owner of London Interior Shutters and live in Dulwich. Just seen this as browsing EDF and think I maybe of some help. For the dimensions you have provided that is a rather excessive price even for UK finished shutters. The shutters we provide are manufactured in China and are the best quality. As a bench mark you should be expecting to pay at least half of that initial quote if you use a company that sources in China. Most China sourced shutters meet strict standards of material/wood sourcing and ECO standards to allow us to import them. If you would like any guidance in your search I'll happily help.