Bearings for Planet X Model C wheels

montac

Hi there
Lots of noise coming from my wheels (PX Model C) - my LBS has advised that a change of bearings is needed. Does anyone know where I can order bearings? Planet X have given me minimal info, and have basically told me to find them myself.
Here are the bearing details:
Front 699 (L8)
Rear 6001 2RS.

Are bearings expensive? Given that a new PX wheelset is £99, would the cost of getting the bearings be worth it?

The LBS reckons that the harsh winter, and my use of a degreaser while washing the bike have probably caused this.

Thanks
montac

short circuit

Here you go
http://www.chainreactioncycles.com/Models.aspx?ModelID=37501
http://www.sjscycles.co.uk/product-Sturmey-Archer-Sturmey-Archer-Elite-Sealed-Bearing-6001RS-4417.htm
http://www.sjscycles.co.uk/product-Wheels_Manufacturing-Wheels-Manufacturing-Ceramic-Sealed-Cartridge-Bearing-6001--12-mm-Inner-28-mm-Outer--8-mm-Width-17077.htm

montac

short circuit wrote: »

Here you go
http://www.chainreactioncycles.com/Models.aspx?ModelID=37501
http://www.sjscycles.co.uk/product-Sturmey-Archer-Sturmey-Archer-Elite-Sealed-Bearing-6001RS-4417.htm
http://www.sjscycles.co.uk/product-Wheels_Manufacturing-Wheels-Manufacturing-Ceramic-Sealed-Cartridge-Bearing-6001--12-mm-Inner-28-mm-Outer--8-mm-Width-17077.htm

Thanks for that. I did do dome googling, but obviously wasn't looking in the right places!