Not perfect, but quick fix.
The site had a couple UI things like separating posters and fliers and having
some sizes only available in each, even though they are functionally the same thing, and not being able to order sizes that weren't in the drop down (had to go through the whole process to order 1000 twice instead on just ordering 2000) and I received part of someone else's order in mine and one part was deliverer a day later after I pointed out the mix up.
That said, quality of the print was good and they fixed their mistakes quickly.