I am now kicking myself for having had this script for almost six months and never having done anything with it. I have been so busy with other projects that I felt like, "wow, just don't have time to go watch tutorial videos and learn a whole new script."
Well, I can tell you that I just put up my first store, which was an addition to one of my existing sites, and it took me about six hours to:
1) learn the entire system, including viewing tutorial videos
2) go back through emails and find my license key

3) download the script and unpack it
4) create the new mysql database and install the script in a new folder
5) choose a theme and mod it, creating all new graphics
6) create a category structure of over 100 categories
7) create rules for all of those categories and fill the store with products

choose featured products and put some shoutout videos in the sidebar for credibility
THAT'S INSANE! That's a crazy short amount of time to do all of that. I will be building storestacker stores on ALL of my unused domains, this is insane!
Anyway, after all that....here's the finished product:
StoreStacker install:
http://acousticvids.com/storewhich was skinned to match my existing site:
http://acousticvids.com