Where from?

Manners cost nothing, treacle.

LOL – just get some BBB ones – they will be fine 🙂

LBS or Dot Bike

Pls.;-)

Where from foxy and how much am I looking at spending.

I use these.

As above – those TACX one will be fine as well.

There are more bling ones if you want to go that way?

Click the Dot Bike link 🙂

3992-13191 and 3992-13192 RollerBoys (BDP-02)

Edit: ahh – out of stock unless you want transparent ones 🙂

http://www.wiggle.co.uk/bbb-bdp-rollerboys-jockey-wheels/

I can second the BBB ones that foxy mentions, quite and lasting well, available with ceramic bearing as well but ididnt bother.
Got mine from DotBike again as mentioned.

Yip BBB ones are very good quality and well priced

Got mine on ebay…

http://www.allez-bid.com/store/Rear_Derailleurs%20/2010_GUB_Bearing_Jockey_Wheel_JY_C11S_11T

Anodised alloy, range of colours, Delivered from China. We are running these on our bikes and they are working fine.

Been buying a fair bit from them and they are really reliable to deal with.