Where to buy Kamui tips for American pool?

[Nugget]

Seen them here:

http://www.pro9.co.uk/html/theprosho...hp?P=cat&C=113

£13.50 each. Wondering if there was anywhere cheaper, and if anyone has used them?

Thanks!

[Mick Dundee]

In the uk 8 ball.com store
they have 14mm & 11mm all grades in the 14s
£9.99 & £7.99 respectively