Meh, cover bands aren't that much money, unless you're in the long haul. Overheads include lights and your own sound system, about a year of playing around and fucking great marketing/just fucking knowing or meeting the right people.
My new originals band is doing an extra long, crowd centered cover of J. Geils Band's "Centerfold" now, we haven't played it live, but we will soon. We're doing it because we just got scheduled to open for some band since the guitarists other band couldn't make it.
I'm partly surprised my old cheesy cover band from last summer never thought to play that song.