my quest for unique old radiators

hot_rod

I'd like to find a circular, and also a cabinet type, along these lines. Or any others unusual designs like the stair step types.
Yeah I know they go through E-bay and Pintrest, but often with thousand dollar and above prices, a bit out of my pay scale.

Chicago, St Louis, Milwaukee are on my typical driving route, but have cash will travel. Thanks for any leads.