for a very reasonable £8.80 (don't know how much they'd sting you for postage).
Apparently there's a US CD reissue of Potatoland on Chord has some more material from the original sessions as well but I've never managed to get my mitts on a copy. The additional titles are:
Salvation
Potatoland March - Midnight Train
Oil Slick - Million Years Information Suite
Mashed Potatoes
1984 Reprise
It's Time Now