It appears that I was way off on the ratio, so I'm offering 5,000,000 Galder per 100,000 Gold now.
[PS Vita] Atelier Rorona Plus (34%/on hold)
[PS Vita] Atelier Totori Plus (1%/on hold)
[PS Vita] Atelier Meruru Plus (100% completed)
[PS Vita] Atelier Ayesha Plus (65%/now playing)
[PS3] Mugen Souls Z (just started)