Laptop screen replacement possible return

[Goatchi]

My Laptop screen recently broke and I went to get it repaired at a shop. While the work was being done I checked prices on the net for the screen replacement. I expected a price increase with it being a local retailer but the replacement part was only £37 online to buy and the place I got it from charges only £10-20 for labour charges. So at £47-57 we're talking nearly double the price. Any advice on how I can return this? It was only done two days ago, anybody got any ideas how I could make this swing?
Thanks for any replies in advance and if nobody can think of any ideas thanks for the time anyway

 

[Goatchi]

Thanks for the replies. Very Comprehensive

I almost always shop around on the net and get these guys to build stuff for me that I order in and last time to build my pc they charged only £20 and got it done during the day, so that's what I would have done with the replacement screen if i'd of ordered it in this time. I've been very busy and I just wanted to play the part of a guy that flies into the two closest local stores i've dealt with in the past, haggle them down and then pick the cheapest option. Straight after I've done this, I've done the opposite of what I set out to do and checked the prices online, knowing they'd be cheaper and I've had an OCD attack over the price
They already had the replacement screen in as well, so the speed was another bonus.
£37 - £27 pounds extra, for a finished on the day product, which they are liable for if there are any faults. I shouldn't Complain.
Enjoy New Years

 

[Goatchi]

Thanks again
Over the New Year i've been having some problems with the laptop, battery related, so it's been happening after the screen was put in.
Hopefully they'll be able to sort it for me.