Amazon Windows Activation

Amazon currently sells three models for a good price but I’m lost about Windows activation. I read that it’s cheaper to get it activated when buying it from Seeed, than activating yourself. There’s a model in Amazon that is supposed to come with Windows activated, but it’s not clear.
What would be the cheapest recommended way to get it with Windows activated? I wanted to top range model, that comes with the case and a 128GB SSD drive, but looks like that doesn’t come with Windows activated.
Thank you

Hi @zuco
If you want an X86 with windows activation, I would like to commend you buy this one.