Are you sure its cheap? The Wraith is one of those movies like The Gate. When it came out
it was common to see for $5.00. Now...gone and you see em real expensive on Amazon.
This is one I reviewed:http://www.badmovies.org/movies/wraith/
I think that I purchased my copy for about $10 new. Unfortunately, it appears that the DVD is now out of print and it's cost on the market is going up. This happens a lot with cult films and b-movies. After a while the demand reaches a high enough point that the copyright owners pay the up front costs for another DVD release.