Wacom Pen Tips/Nibs

I have recently got to grips with the Wacom Tablet. In the first week I had worn out one of the tips/nibs.

I have sourced some Wacom replacement tips/nibs, but they are a tad expensive (£4.99 for 5). To date I have been unable to source a bulk supply of these tips/nibs at a lower cost.

I am confident that somewhere I can purchase larger quantities of the tips/nibs. OR..... am I doing something wrong?

I emailed Wacom Europe 10 days ago, but no reply as yet.

Malcombe