Two suggestions with credit to member virginiabeachgirl for spotting the deficiencies:
1. Add Best Offer icon to Store ad and Scrolling Gallery for OBO items. Lack of designation inhibits viewing item by buyer, i.e. price appears to not be negotiable as listed.
2. Add OBO auto-accept minimum price to one-page lister. Deficiency currently requires revise listing at eBay to correct (as workaround) and is sub-standard to eBay one-page lister capability.