Industrial PC Case
Search for an Industrial PC case ATX , RTX compatible.
The Industrial "STYLE" PC case is not an actual specific model of case, But It is a sort of mimimalistic bare bones and zen style that lends itself to a sturdy but low cost case option.
These cases will get the job done and have a minimalist brutal industrial style about them A quick search shows this style of case costs the least and looks pretty impressive. They go for 50 - 100$
Good example DARKROCK EC2 Black ATX Mid Tower PC Case, Type-C Ready, Supports 40 Graphics Cards, Tempered Glass Side Panel, Supports up to 8 x 120mm Cooling Fans & 1 x 360mm Radiator, 1 x Pre-Installed Fan
Cost as of this post 52$