As one of its daily deals, Amazon offers Prime members Doc Martin: 6 Surly Seasons and the Movies on DVD for $41.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's the lowest total price we could find by $5, although most retailers charge $73 or more. This set includes the first six seasons and two movies across 16 discs. Deal ends today.