I spent thirty days in jail and now it's not even a crime

A lawyer called me and said he could work to get the conviction expunged from my record and gone forever, but the guy wants $2,500

My friends and I took a road trip down the coast of California. We were gone for several days and we took lots of marijuana with us on the trip. Marijuana was not legal at the time. My friends and I got pulled over for speeding and we were right outside of San Francisco. The officer was a young guy that was new to the force. He found the bag of marijuana in the car and tried to say we were drug smugglers. We had a half ounce of weed on us at the time. I why is placed in cuffs and so were my friends. We went before a judge in San Francisco and he found us guilty of the crime. I was sentenced to turn myself and and spend 30 days in jail. These days, San Francisco and the rest of California have legal marijuana laws. Any person can legally carry up to 1 oz of marijuana in their vehicle. Since the laws changed, my past infraction is no longer a crime. A lawyer called me and said he could work to get the conviction expunged from my record and gone forever, but the guy wants $2,500. I don’t think I had to pay that much in court fees during the original case and I had a year of payments after I got out of jail. Since it’s just a charge for marijuana, I don’t mind if someone sees that on my permanent record or not. It’s not a law anymore and everyone knows that.
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