I've ordered from them several times and have been very satisfied with the result. I've also emailed them and did get a reply after several days -- they are very busy, for sure. I can only imagine the number of emails they must get per day.
The only issue I have with them is that they charge $15.00 for shipping the Daily Deal to Canada. It not worth it to me to spend $15.00 to ship a $5.00 item - it's not much of a deal for me. So I do not take advantage of their DD's.
I do love their tutorials, however ... very informative and easy to follow.