Upload & Sell: Off
A fellow employee at my place of business at one time held a job at UPS. He told me that if you ever ship anything fragile with them, to pack it VERY well, and write fragile all over the package. The reason why?
From his description of the process.. he worked on a line sorting packages, and he said the normal method for getting the packages off of the conveyor quick enough ( I assume it was a conveyor belt type system) was to toss them over his shoulder with a good amount of strength. The packages would fling a good 10 feet into the air.. hit a fence, or wall of some sort.. and pile up against each other into one big pile that someone else would sort. He made it clear that this was not his preferred method for doing his job, it was the method that was taught to him.. because of the speed needed to get the packages off of the moving belt. Now, I don't know how much truth there is to this, I have no reason to suggest he is lying, and I am sure similar stories can be heard from USPS, and Fedex. The reality is.. Package your item VERY well.. insure it.. and cross your fingers no matter who you use.
If you are shipping coast to coast USPS is usually faster. If you are shipping to a nearby state, UPS is usually just as fast, and sometimes faster than USPS. USPS is less expensive for shipping overseas usually by a large margin. I recently sent a lens to Australia.. it was $20 bucks from USPS.. and UPS quoted me $95.