Kraken is eventually going to enable me to convert it directly into USD, but it still has some regulatory hoops to go through in California at least.
Check the order book for just one exchange (Cryptsy DOGE/BTC). Very liquid. There are tens of millions of DOGE worth of open buy orders at any moment time. https://bitcoinwisdom.com/markets/cryptsy/dogebtc
EDIT: Ah. $99/mo in exchange for zero trade fees. That's actually an interesting dynamic.
- There are trade fees, but only to a maximum of $99/mo, and only if you remember to ask us to cap them.
Go to CoinedUp and convert dogecoin -> bitcoin. Send bitcoin to coinbase. Sell bitcoin on coinbase.
Kraken isn't open to USD transactions in my area yet.
Also - selling doge to private parties for USD, possibly in person.