In reply to Martin1978:
I own a pair of 5 10 spires for nearly a year and yes they do stretch a lot at least half a size. They are super comfy now they stretched which didn't take that long 5 or 6 visits to the wall and a bit of messing about with the laces.
Unfortunately the stiffness doesn't last and I don't find them to be very precise (quite squareish at the toe) but at the grades I climb and as an all day easy climb shoes I find them hard to beat.
Just to contradict what I've just said a friend of mine got a pair at a good price and climbs the grades you mention with the spires no bother at all.
I doubt your going to get much for them as God they are ugly so I would persevere with them.
Hope this helps.
cheers
Gaz