Asking 'how much $ to get into tube equipment is like asking 'how much does a car cost, I want to learn to drive'! Depends on what you find if you're not in a hurry. Some people pay stupid amounts of money to get what they think they want. Then, some people stumble upon a too-good-to-be-real deal, like a fisher 500c in a custom-built cabinet/table, working, for $40! Ya never know... hit the yard sale/ flea market/thrift store rounds, something bound to show up eventually.