The 38-year-old actor and Bell, who tied the knot on October 17, ditched the Hollywood trend of lavish affairs, reported Ace Showbiz.
"We went to the Beverly Hills courthouse, and all in, with fuel to get there, USD 142 out the door. I don't yet have a ring," Shepard said.
The actor also said that after the ceremony, the couple joked that they just had the "world's worst" and cheapest wedding.
"Friends of ours came to the courthouse, and it was just Kristen and I at this lonely courthouse, so they brought us this cake afterwards. 'The World's Worst Wedding' (written on it)," he said.