Do you use a third party and just do the front end on top, or do you the whole site, printing and delivery yourselves?
What made them an easy choice over others was you can use them in the background like they don't even exist. Other services required users to login to their own service (or create account) before continuing which was less than ideal and created a really broken flow for a user.
Plus like @samwillis also said, they are completely white-label, putting your sticker on it if you want, making it look like it came from you.
Lastly they were very easy to communicate with, answering questions quickly and even willing to help with creating different packaging.
Some time in the future I may print my own (may be more cost effective), but for the time being this is a great choice for me.
I assessed a few of the printing api services and Pwinty were the easiest and most others would ship under their own brand.
Maybe if they were from a friend's feed and they wouldn't email me the originals for some reason or for convenience... but when they are my own pictures and I have the originals... doesn't make sense to me.
The older photos on Facebook are pretty low res, but they do now have higher res ones available and are the proper res for 4x6 prints, I believe they have had this since adding the full screen image viewer.
I very rarely print stuff these days but I can understand the convenience factor - I'm probably not your ideal demographic anyway since I very rarely print, it would not be that that inconvenient for me. Plus I only have one friend :(
Actually, the image quality you get from FB through their API is dependent on both the photo size that is being uploaded, and the quality you ask facebook to save your photo at. A high resolution photo that is uploaded to Facebook in high quality mode is a good photo for a 10x15cm print. Any bigger print size and you start running into resolution issues.
The trick here is to show the user which photos he will have low resolution issues, and which he won't.
I typically do not like "Connecting With Facebook" unless I have an extremely compelling reason to, but this landing page tells you almost nothing about what's on the other side of the authentication, apart from the end deliverables. Some more details would be great.
Edit: Ah hah, I found the price. :P Perhaps don't hide it in light grey text at the bottom of a lengthy paragraph towards the bottom of the page.
Also, do you deliver to the UK?
And yes they can be delivered to the UK, the photos are actually sent from the UK
Will be sure to use post holidays - also what about printing them as postcards (photo on front, blank or typed message on back.)