Chicago: vinyl, CD and cassette prices

Compare the price of 3 Chicago records on vinyl, CD and cassette in UK record shops.

CDChicago - Chicago At The John F. Kennedy Center For The Performing Arts, Washington D.C.£69.99Crash Records1
vinylChicago - Chicago II (Steven Wilson Remix)£27.99Assai Records2
vinylChicago - Greatest Christmas Hits: Red£40.99Recordstore1