Hi guys, I'm new to online marketing and have just very basic knowledge. But what is the best way to forecast and model CIR ? Theoretically, let's say that I have 10 SKU's. Each one of them has CIR of 0.2 and gross margin of 25%. That's nice, I'm making some profit. Now, how can I model CIR behavior, and what are the inputs/tools for that ? I'd like to rank those products and model how much marketing budget I should assign to them to maximize GM% using above mentioned SKU's. Cheers, Maciej