Scared Silly: 13 Classic Horror Comedies is a 3 DVD set any corny and B-movie fan will appreciate True, many of the movies here such as Spooks Run Wild or One Body Too Many are public domain and available everywhere but some are not or are hard to find. Anyways, Amazon is asking about 6 dollars for the set and a really good deal or inexpensive gag gift with great stars such as Susan Blakely, John Schuck, and some guy named Jack Nicholson. Picture quality is rather ordinary but both of the 80's offerings look great.
My favorite of Scared Silly: 13 Classic Horror Comedies DVD set is Deathrow Gameshow (made for $200,000 in 1987 according to IMDB). The host of a TV game show where death row inmates are given a chance to get a pardon or a live execution receives death threats. There is some great dark humor here such as the bit where a man's family will get $25,000 if he lands face up after decapitation or the trailer for the character's nightmare scene, and really funny writing. It also features pointless nudity, as it should.
Also a low budget and questionable acting hoot is My Mom's a Werewolf (1989). The title reveals the central plot but does not indicate such pearls of cinematic writing like: Fortune Teller (Ruth Buzzi): “I see the pentgram on your face!” Girl: “Uh, that's just a zit.” This is great straight to video shlock where mom's daughter and her horror movie fan best friend have to save mom. Look for Marcia Wallace, John Saxon, and Marilyn McCoo. Don't try to make sense of the (romantic elements of the) plot, nobody can.
The other Classic Horror Comedies are Creature From the Haunted Sea (Roger Corman, 1961), The Creeping Terror (1964), Ghosts on the Loose (1943), A Bucket of Blood (1959), The Gorilla (1939), King of the Zombies (1941), Little Shop of Horrors (1960), Manos: The Hands of Fate (1966), One Body too Many (1944), Spooks Run Wild (1941), Treasure of Fear (1945).