American Oricon ?

[Mad_Cactuar]

Oh never heard of any.. Never found any too. But Wikipedia is the best. For some artists with devoted fanbases, the first week sales are usually mentioned in a paragraph somewhere around career. Check it out. I'm sure you know Wiki... Sales are often provided too. Like Shakira's Oral Fixation Vol.2 first week sales are there, at 128 000 copies. Madonna's is also there, at 300 000 something and gwen too. You need lots of digging though.