Running shoes for underpronation

[Babysharkdoodoodood]

Where can I get decent running shoes that won't set me back an arm and a foot (sorry)?

I have plantar fasciitis and am doing well on the C25K in my new balance 680s. But they won't last forever and they are hideous in bright orange. (Sports direct special)

I'm running/walking every other day so don't want them to be super expensive, only to keep wearing them out and replacing.

Any ideas apart from SD?

TIA

I would be inclined to go to a running shop and get gait analysis and their advice. It's much better of you can try a selection of shoes on and see how they feel.

I am fairly new to running and having proper running trainers made a huge difference to me. Now I know what shoes suit me, I will buy further pairs online.