I wanted to write this for anyone seriously considering purchasing this set. I just went thorough all ten complete seasons and added up the cost. As of the date of this review (noted above) the individual sets would cost $432.90 yet this set of all ten seasons is selling for $525.81! If it came with extra content I could understand, but it's just the box sets of each season bundled together for the customer's convenience and Amazon's profit.
Bottom line: buy this set and WASTE $100.
Other than that I highly recommend E.R. to anyone who likes top-notch TV drama.