The well-loved but tough-to-find "Monster Surfing Time" by the Deadly Ones is finally seeing a vinyl rerelease courtesy of the Concord Records - from what I can tell its first since 1964 when Vee-Jay originally released it. A mint copy of this sells for around $200, with VG copies going for $50, so this should be much easier. This reissue will feature translucent slime green vinyl to add to the horror. Not much is known of the players on this one other than Joe South, but it's a must-play for any Halloween instro-set with some creepy effects alongside cheesy vocal moans and yowls.
This should be pretty easy to find on amazon and other major music outlets.