https://www.amazon.com/Mist-weinstein/dp/B003TNM2K6/ref=mp_s_a_1_1?dchild=1&keywords=the+mist&qid=1587570199&sr=8-1 On amazon prime in the US. OP doesn’t mention where they live but this movie seems to have the same availability as any other film from the time. There’s next to no money in DVD releases of older films these days so it’s rare for the rights to get sold, unless a studio gets purchased and there’s a mass transfer of assets.