I got one from the US wreckers on eBay
mototech271 a year or so ago from an '08 R3 Touring with 31,901 original miles.
US $268.45

+ Shipping: USD148.95 USPS Priority Mail International .
Still less than AU$600 landed in OZ was a good price.
Make sure you get the cam ladder with it which is apparently machined to match each head specifically.
Thank you found 1 for a little over 500.00