Very interesting but the only people who have it want a lot of money just for shipping, to most not european countries start at 30 usd beside $ 2.50 each piece.
For their size, the Nichia's are impressive. Although... the above output only calculates out to 117.6 lm/w. May not be bad if you're using one to upgrade a very small light, but if you're looking for more an xpg or xml can exceed that efficiency at low current.
Another option for cheap Nichia's would be to buy a fusion 36 drop-in off of ebay ($25 free shipping). Just under $0.70each and are a nice neutral white, although I'm not sure the exact bin #.