These were out of stock for a while but they're back on Amazon (actually Amazon preferred merchant Indigostarfish, in Jersey). I got mine delivered quickly with no fuss, and they sound fantastic. I've been using them for a week so far.
I missed out on my previous post, the £14.99 Sennheiser PX100s, (I've had two pairs of these). After reading around I read a few recommendations for PortaPros.
The PortaPros look ok in reality, (I thought they looked a bit ugly on-screen) and have a ComfortZone Firm/Light adjustment on the headband, which is a nice touch. They fold just like the PX100s do. They feel sturdier and sound a tad better, and I thought I'd be buying PX100s forevermore! The PP's design has barely changed since 1984, hence the retro styling.
It comes complete with a carry pouch and a with a 6.3mm Gold Plated Adapter.
Koss even have a lifetime warranty; if they break and you still have the receipt, post them back and they'll replace them.