That's not bad for ebay. A 4m bar would be about £80, he's chops it into £1 lengths and sells them for £1.80

Usual ebay mark up is a lot more than that.

I bought a 4m bar of 4.25" diam 7075 T6 for a job a couple of years back, still have a couple of meters left. It was the opposite of cheap but is extremely handy stuff to have around