I have one but be careful when you order the ones on eBay there's a light one and one that feels like aluminium. Also the seller/supplier I used for the purchasse of two has changed the style but you can still get the original style on request.
Price approx £55 incl postage
Oh now I'm confused, the Yahoo group reckons that J&L have changed the style slightly to prevent breakages (the type that is like the original seatpost)... I think the rockbros ones look a bit better.
I have one but be careful when you order the ones on eBay there's a light one and one that feels like aluminium. Also the seller/supplier I used for the purchasse of two has changed the style but you can still get the original style on request.
Price approx £55 incl postage