Go underground/indie.
Start with Found.
Walmart carries it.
Indie Directors to watch, Joe Stauffer, Phil Stevens and Steven Biro, Marcus Koch.
Most directors have their own store to purchase their films. Also look into ToeTag and Unearthed Films. They have amazing customer service.
Also browse my forum, tons of indie stuff and where you can get it. : ) Have fun!
http://www.extremehorrorcinema.com/