I have currently done 14 videos. I go all out for my videos. Lots of editing (although it may not look like it) creative transitions, music, which needs to be picked out, uploaded and put on the video. I also put text on my videos and a credits at the beginning and end. It usually takes me an entire day or so to do a video, so I haven't done a large number.
If something doesn't look or sound right, I will usually do it over. That means an other day or half day of video shooting, uploading, editing, crafting etc. It's stressful.
I do like to do them really well, so I take my time and add lots of extras. I think I have only used Eden's theme song once, on my first one. I choose my own music, preferably something that goes along with the product. I've spent over an hour finding just the right song to go with my videos. I was upset to learn that you can't use music uploaded from the Apple site for any other use. It won't work with Microsoft Movie Maker. I tried for hours, several times. Once, I even played the song through some speakers while I filmed the video, because I had to have that music. (The Darth Vader Theme for my The Body vibrator.)
It's fun, but it's a lot of work.