There is a used/sample unit for $1600 on amazon. But beware that Lotoo does not support the sample/demo unit for warranty purposes.
I also heard that Lotoo has been working one headphone supplier to provide a high gain/special firmware version of the lpg called the "Diana version" to drive the abyss Diana planar headphones.
http://abyss-headphones.com/lotoo_paw_gold_diana.html
Not sure if this version come with internal memory or they include a 256 sdxc.
Can this firmware update be found anywhere to download for Loto Paw Gold owners?