I completed configuring sale prices, etc for the items I wanted to be sold in the RP shop.  This is in the Oxide/Data/ServerRewards/sale_data.json file.  However, when I save my changes, validate the json with json linter, and reload the plugin - nothing shows up in the shop.   The kits and commands data file (oxide/data/serverrewards/reward_data.json) is working perfectly. 

There are also numerous errors about querrying Steam for workshop item data for the "skinned" items in the file.  I simply deleted all the custom skinned items and that resolved those errors.

I DO have the ITEMS tab activated in the main configuration for ServerRewards by the way.    I also have a question about the "icon name".   Is that for a URL (I assume) for the program to find the icon or is there a specific image this is wanting here?

I just went back and looked at this after server restart - ALL the data I had set has reverted back to the default settings as if I hadn't spent an hour or more configuring everything the way I wanted it.   Then, having been a week already with no shop, I suppose it's a great thing that my server hasn't gone live yet.