More a suggestion

[SoleInvictus]

I had an idea that'd obviate the need for iterations. Have you thought about using a website like giveaway.city instead of Amazon's actual giveaway page? It displays a continuous list of giveaways on a single page. It also allows for easy filtering. I'm not affiliated with them, it was just a thought.

[zdrouse]

I am familiar with that site, the only unknown element to me about that site is how often or what is the timing it takes for their site to update with giveaway information.

If someone on Amazon posts a new giveaway, does it immediately show on giveaway.city?

[SoleInvictus]

Good question, I have no idea on the timing.