Thanks Youknowwho4eva - I had found the csv, but haven't used it as I didn't make my models for sale yet (want to organize them). But that is obviously good. It would speed up everything for me (and whoever else has big model sets) if essentially all the key features (markup, public/private toggle, sections, etc) could be accessed in one convenient place working on groups of models as defined by the shop-owner and set en mass.
For me it's very practical. I've uploaded nearly 40 models of what will be one section of my shop (there will be initially at least 5 sections, likely more). That took some time. Now I realize to set the markup, I need to make them for sale, but I can't just do it for all of them, I have to go back to each one, involving multiple clicks for each, then repeated 40 times. If I upload all my models (several hundred), it's a depressingly monotonous future!