If you mean Universe Inferno, then he'll be a voyager when he's released at retail. The price depends on your store and country, but it's MSRP is about $20.
Inferno is a Voyager, which normally retail for $20 USD, depending on where you buy them. It may be closer to $22-23 due to the recent trend of price increases. Of course, sales and Wal-Mart may keep it low.