The Guardians of the Galaxy has come out of left field to be a runaway summer blockbuster.. and it's effect is being felt all over the music industry. The album is #1 on iTunes. Blue Swede's rendition of "Hooked On A Feelin" is selling like crazy and somewhat surprisingly the cost of the vintage Sony Walkman has also skyrocketed. A quick search on ebay found a Sony TPS-L2 cassette player, originally introduced 35 years ago, sold recently for $900. In the movie Chris Pratt uses one to listen to his music.

Skip to the 1:30 mark of this clip to see...