Place to buy aged domains cheap?

Any place where I can buy aged domains for cheap?

The cheapest ones I can suggest are in Godaddy's expiring names. They have a lot (and I mean a lot), starting at five bucks a pop, but you have to run them through, to see if they had a site built at one time. Traffic is a good indicator for that, then go to wayback machine for details. And check whether it has not been banned.

There some reliable free resources where you find for free.Google for it

How can you tell if an aged domain has been banned?