Much depends on your definition of "cheap".
But cameras like the Calumet C1 and some of the wood cameras like the Koronas, Ansco Views and some of the Kodak views are relatively cheap. They tend to sell for 300-500 USD.
That said, the camera price doesn't tell the whole story, as you need holders and a lens. 8x10 holders are a good bit more expensive than 4x5s, lenses in barrels can be had cheaply, but good shuttered lenses get pricey.
One nice thing about 8x10 is that you don't need a huge enlarger to get a nice size print. (as long as you like 8x10 prints).