According to Akiba PC Hotline, TDK's BD-R and BD-RE media has shown up in Japan.
http://www.watch.impress.co.jp/akiba/ho ... aypre.html
It looks like TDK's 25GB BD-R media is going for 1,980 Yen or about $17US. The 25GB BD-RE media is pricier at 2,780 Yen or $24US.
Has anyone seen this media in the US yet? It's supposedly shipping.