"Bother" said Geek
The "Pound a Day Movie Project" has been going for 353 days so. I figured doing it for a year would be a nice round period of time. Unfortunately with barely a couple of weeks left, Amazon have changed their API in a tiny way that will nerf the project.
The change is that Amazon now limit their API searches to just 100 products. Which is fair enough - we don't want to overload them with requests etc... The problem for me, though, is that typically when I search for Blu-ray's I get around 200+ items. And they're sorted by price. But the API includes market place prices in that sorting, so the first 100 items are mostly market place items. Which aren't eligible for free shipping.
Bah. I'm going to have to scrutinise their docs to see if I can find a way to filter out market place stuff or sort by actual price not the stupidly low market place prices or something. I don't hold out much hope.