The most expensive TV series ever made?

The Netflix series The Crown is not the type of thing I usually buy into - all those many Masterpiece Theater productions and their ilk - I have to say, based on the first 5 episodes (out of 10) that it's a truly great series: taking the events of British history and the British royalty and building a series that's political, personal, and historical: We see all the drama surrounding the abdication (in the background), the death of George VI, the ascension of the young and newly married Elizabeth - amidst all the pressures and conflicting demands - upholding tradition while recognizing the changes in the world and in English culture, still reeling after the War, led by a dyspeptic and perhaps incompetent elderly Churchill; we see the marriage tensions between Elizabeth and Philip, and we see in a way that never ironic or didactic the basic simplicity of the monarchs - a clan that loves only dogs and hunting and shooting and sport and has little interest in anything else. OK, it makes Eliz a bit too much of a hero: it's hard to believe she really was strong-willed enough to push for a modern monarchy; and it glosses over, in fact ignores entirely, the dark history of Edward, a Nazi sympathizer if I remember correctly - you want see that here. But you will see the most lavish and expensive production values of any series ever - Netflix out-doing the BBC by a million pounds, at least. Everything, large and small - from bi-planes to steam locomotives to Rolls Royces from 1955 to teacups and garments and flower arrangements is of the period and lavish and must have cost a fortune to create or re-create. Even for a non-royalty junkie it's an amazing series just to look at. Beyond that, the leads are good, in fact Claire Foy, who's making a career of playing monarchs, is excellent in the lead and Jared Harris, late of Mad Men, makes a great weak and shy George VI thrust into a fame and responsibility he never wanted. Jonathan Lithgow is a fine doddering Churchill as well. Worth watching for sure - and more seasons anticipated.