Amazon is sold out of Kindles again. Last week, the retailer sold out of the $189 eReader temporarily and then announced a new $139 eReader. Today, both of the eReaders are temporarily sold out. The only Kindle that is currently available from Amazon is the $379 Kindle DX.

Both eReaders are out of stock for the entire month of August. The website says: “Orders are prioritized on a first come, first served basis. Orders placed today are expected to ship on or before September 4th.”

Jeff Bezos must have gotten people excited on Charlie Rose.