I've been lurking for awhile and probing different ideas. Finally came up with a very specific niche to sell only one popular item that I believe would easily sell at a 1:4 price because of its impulse buy value in my eyes and from what I've heard from others that I've shown the product (for what that's worth). Just to start out building I've purchased two domains that contain very specific keywords for the product. I was actually surprised that the main keywords + pseudo name for the product were not taken. G's Keyword Planner shows ~20k/mo searches on these keywords. My question: When developing specific niche sites like this how do you guys handle multiple domains trying to sell the same product? Is it better to build both/all domains as "competitors" to each other with links in between, or build them where each has slightly different content and link to a main host "selling" domain, (or other method?) ? Will be working on backlinking depending on what the best course of action is here and plan to post results as it plays out. Thanks!