ELO: vinyl, CD and cassette prices

Compare the price of 4 ELO records on vinyl, CD and cassette in UK record shops.

vinylELO - Discovery£25.99Assai Records4
CDELO - Live On Air 1972£7Sister Ray1
CDELO - The Collection£6Sister Ray1
vinylELO - The UK Singles Volume One 1972-1978£82Sister Ray1