If, like me, you can't quite stretch to £60/£80/£100 plus for decent pair of running shoes, I would definitely recommend a pair of these Gel Innersoles.
I run in cheap(ish) shoes that I've had for a while and would love to invest in a pair or "proper" running shoes but it's not an option for me at the moment.
So I tried these:
ebay.co.uk/itm/251231581677...
What a difference!
Lower back pain: Gone!
Slight pain in my Achilles: Gone!
Shin pain (a big one for me): Gone!
I couldn't believe it. Instant difference!
I'll still save for a decent pair of running shoes but in the meantime I highly recommend these as a stop gap.
Six quid well spent!