So while going through Seattle 2072, I realized that the "Blue Man Lore Store" from Emerald Shadows is actually the Blue Moon Lore Store (Seattle 2072, p.46). I suppose it's a typo in Emerald Shadows, as Blue Moon seems to be a better name for a magic shop, unless the owner is actually a big Blue man group fan... :p
The good news, I now have an address for it ^^