Based on search results, here are the primary ways to purchase QI DVDs:
The Complete Qi - a to D Stephen Fry & Alan Davies DVD - eBay buy qi dvd
Many retailers, particularly on eBay, sell used-but-good condition sets. Regional and Technical Considerations Based on search results, here are the primary
Themed or alphabetical collections, such as the QI: A to D 9-disc set, are available, covering multiple series in one collection. Based on search results
Several listings indicate a comprehensive DVD set collecting the complete Stephen Fry era.
Early series (e.g., Series 1/A, B, C) are frequently available, often released as 2-DVD sets.