Light wheeled armoured vehicles begin at around 10 grand. You can get a tracked amphibian at around 25 K. It goes up from there. Polish T55Ls with a 100mm main gun start at around $9000, FOB the Polish port of Stettin; shipping will cost about that much again. Shermans/ $150,000, Centurions/$95,000, M41/ $105,000- and most WWII Allied vehicles are available; some Axis vehicles are also around but there's a high demand for them; the Czech T38 is probably the most practical, though there's an early WWII Panzer II coming on the market.
Check *here*, and *here*, and *here.
So far as hunting goes, I do know of one paraplegic who hunts from a British Ferret. But most private sector armoured car/ tank gunners are more inclined toward target shooting. At a half-mile or so.
