A general enhancement of filter / sort / search in /inventory will be beneficial. The selectable values in the Filter dropdown do not filter inventory reliably (Status / Categories / Graded / Grader / Attribute / Brand Selecting "Available" switch takes ~10s to load results for a 10k inventory, longer for larger. General enhancements include: ability to filter by listing price ability to filter by common card metadata (set, name, year, variation, attributes, cert number, etc...)