Roky Erickson & The Explosives: vinyl, CD and cassette prices

Compare the price of 2 Roky Erickson & The Explosives records on vinyl, CD and cassette in UK record shops.

vinylRoky Erickson & The Explosives - Halloween: Live 1979-1981£40Sister Ray1
vinylRoky Erickson & The Explosives - Live At The Whisky 1981£31.99Assai Records2