Joe Satriani: vinyl, CD and cassette prices

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

vinylJoe Satriani - Not Of This Earth: Limited Translucent Blue£29.99Recordstore1
vinylJoe Satriani - Surfing With the Alien£36Sister Ray1
vinylJoe Satriani - The Elephants Of Mars£51Sister Ray1