They do tend to get busy, but it's a family owned business...
Also they run out of plants sometimes, and it gets delayed a week.
Overall, IMO, it's worth an extra week or two to get the plants 50-80% cheaper than anywhere else.
Don't worry about the cold. They're in Ohio- they know what they're doing. If something melts or dies before you get it, just send them a picture and they will add it onto your next order for free.
What email address are you using?
I typically use their @fuse.net email rather than the form.