Complex sentence: At the time this was an expensive rich man's occupation and the Sydenham's money was running out, in 1697 Philip Sydenham was trying to sell the estate for a price between £16,000 and £20,000.
Split into simpler sentences: At the time this was an expensive rich man's occupation and the Sydenham's money was running out. By 1697 Philip Sydenham was attempting to sell the estate for a price between £16,000 and £20,000.