Sorry for late response.
Topic was subscribed but I didn't get any info on mail about new posts in this topic. After two weeks of regular forum checking I gave up and waited for mail info which not come.
To explain closer what is my problem I'll give example:
item: basic alloy
location: Planet Le Mans (Discovery Mod)
price: 50 credits (default price 50 credits)
base sells and buys
on mail screen all looks ok
on "view-> items repository -> commodities -> basic alloys" you will not find Planet Le Mans on list as base selling it.
I think you query data in one shoot in this control for both selling and buying grid and filter out all bases with price set to default not checking if they sell. That my thoughts of course and You are the man who can explain real reason.
Than you in advance for fix in next version.
Best Regards