I have a couple questions.
1) Has anyone here gotten templates from The Book Designer site? More specifically, have you had to contact support at all? I was looking at them, but I had questions. Each time I've emailed for information, I got crickets in response.
I've used two different templates from The Book Designer. I did find a bug in one of them that I had to contact support for. It was the Pulp template (5.25 x 8 trim size) and one side of the page had, like 33 lines of text and the other side had 34, I think, and they didn't seem to understand what I was getting at. I ended up fixing the issue myself by going into the footer and either adding or removing a line. Can't remember which. It was a few years ago.
Other than that, the templates themselves are pretty easy to work with. You just cut and paste your ms. in.
They work well with all the major retail platforms, too. The only issue I had was recently with Smashwords. I had to go into Styles and change the paragraph spacing or something like that in order to pass their "meatgrinder." But again, a five-minute fix.
All in all, they're a relatively low-cost, easy-to-use option.
I'm debating whether to go that route again for my next release or spend a few more bucks and have a pro do it, just because I've never done so and would love to see how it compares.
Hope this helps!