Amazon has the complete Harry Potter 8-film DVD set for just $39.69 right now! About a month ago, Best Buy had it for the same price and it was as low as I have seen it!
It works out to less than $5 per movie!
They also have the Blu-ray set for $59.99, which is under $8 per film, a great price for blu-ray!
Get it here before the price goes back up!