Hi,
This album is fairly rare. It was the third release on the PYE records label and I believe it was only released in the UK and Australia. It holds some great gems on it that have not been released anywhere else, Macho Man, Jamboree, Mad about the Frog and the great Magic Garden by Kermit.
Its a great album and I love the album artwork.
Although fairly rare they dont sell for huge amounts.
There is one on ebay at the momnet along with Album One,
http://cgi.ebay.co.uk/2-MUPPET-SHOW...286.c0.m14&_trkparms=66:2|65:10|39:1|240:1318
Hope this helps, there is also more in info in the Muppet Central Collectibles guide.
Chris