How much should I expect to pay for fitting a new shaft?

I broke the head off my 5 iron at the range a wee while ago and altho I've tried replacing it with a 27deg hybrid, I'm starting to really miss it from my game. There are just so many par threes that demand that club!

My question is: If I buy a similar shaft (stiff steel) and grip it up myself, how much should I expect to pay for a pro shop to reshalf it for me. It's the first time I've ever needed it done so I don't want to get scammed. Also does anyone know any places in Northern Ireland where I can get it done?

Thank you!