Amazon UK offers Star Trek: The Original Series: The Full Journey on Blu-ray for $13.85 (£10.80). During checkout, it falls to $11.54 (£9). With $3.95 (£3.08) for shipping, that's $56 under the lowest price we could find for this stateside. This region-free 20-disc set includes all episodes of The Original Series.

Note: This Blu-ray set is region-free; the episodes themselves will play on US Blu-ray players, but the extras and special features may not. It will ship in one to four weeks.