Check out dvdboxoffice.com where Fox has a promotion running... if you buy four Fox movies apparently you can get one of fifteen movies free, one of which is the Wing Commander movie... If you don't have it and didn't really want to pay for it maybe now's your chance.You can read more about this promotion here. Be sure to read the fine print: All four DVDs must be part of the same order, and you have to e-mail them to collect your free movie. Also, no Québécois!
Only draw back is they don't always have the best price... but they have free shipping world-wide.