Thanks very much. I have just ordered the kit in your first link (D10-WAT). only over $7. Checked the needle as you suggested: it was'n black but seemed very good. Checked the ebay store from your the link you posted and realised they also had D10-WTA @ $4.80 which seems to have all i need for now, except that the diaphragm looks made from a different material.
For the full kit I see they have the K10-WTA. ($13.50) This would have also been under $20
Thanks again, I will patiently wait for my order to arrive. I will put the cutter together and will update the results then.
cheers