At Ebert's Overlooked Film Festival this April, Carruth broke down the entire cost of the released film. $7,000 to get it to Sundance, then another $30,000 afterward to blow it up to 35mm for release. Total Cost: $37K
Unlike with El Mariachi, Primer was edited digitally using Adobe Premiere and hence didn't have to go through a second expensive post production after being picked for distribution.