So 3 weeks ago, I noticed the clasp on my watch had lost a screw and two washers. I was still able to wear it because when fully clasped it was secure, but as soon as it was opened the whole clasp was prone to completely falling apart. I had taken it to my jeweler to have them order parts and they said I could keep the watch, they'd just order the parts and let me know when they came in. Estimated cost for the parts was around $200 (yes, for just the clasp; it's an expensive watch). I then got a phone call a few days later that I would actually have to give up the watch for 2 weeks while they ordered the parts because each part is available individually from the maker, so they need to watch with them to make sure they order the proper materials. Oh well, whatever is necessary.
I decided not to drop off the watch til after my vacation because I could still wear it and I wanted it while away. I went back in today, prepared to leave my watch for 2 weeks and to pay a bill of about $200. To my surprise, the jeweler told me she already had the parts because, amazingly, three other guys had come in after me with the same issue with their watches, so they simply went ahead and ordered clasp assemblies for all the watches. She made the repair while I waited, and because all I needed was a screw and two washers, not the tang with the brand on it, the cost only came to $50! SWEET! Nice surprise.
tl;dr - I expected a watch repair to take 2 weeks and cost me $200; it instead was done while I waited and only cost $50.