The gel in the shows have a life of about two years (unused) so getting a cheap deal for shoes a couple of seasons old may not be worth it. When you buy them, ask how long they're been stored in stock.
After two pairs Asics Nimbus V's, I purchased a pair of Nimbus VI's, same size. A half marathon later minus a toe nail and huge blisters. Time to buy a bigger shoe or different brand. Pity as usually I'm pretty loyal to my brands when I find something good.
Had a fabulous one, doing a long (for me) run down the Grand Union Canal. 28 degree heat, half an hour to go and run through this huge number of teenies/tweenies having a party.
One girl asked for some water. Not one to pass a fair maiden in distress I stopped and offered my water bottle. A couple of bewildered blinks later I realised she wanted to keep the bottle. I thought she was taking the p*ss, but the boy friend suitable embarrassed rescued it for me.
Off course, I don't need water. While she with tonnes of beer in reach, didn't quite understand the irony.