The imprisonment of Jerry Duval, a seriously ill medical marijuana patient convicted of distributing the drug, could cost taxpayers upwards of $1.2 million, reports the Huffington Post. Duval suffers from Type 1 diabetes. He has received both a kidney and a pancreas transplant, and he also lives with glaucoma and neuropathy. Consequently, he has a strict medical regime, which prior to his arrest included medical marijuana. Despite the fact that Duval was a registered Michigan medical marijuana cardholder…