Microsite/Landing Page

Long story short: I'm in education, and one US state won't allow one of my products in the store if I want to qualify for state funding. They've said I can create a microsite or landing page specifically for them where that product is not included but...how?

I see landing page apps, but those seem to apply to the store as a whole. I really just want my exact same store sans that one product. Catalogs won't help, as those are country specific rather than state. I'm at a loss!