We currently operate a marketplace on Shopify, using a shopify store app which enables various vendors to sell on our platform to end consumers (like any standard marketplace). We are trying to find a solution for SEO to the following:
1. We want to use the collection page as a product page, : reason is that for one single product (e.g. iphone 12, we can have a few variants (storage, color) and many vendors. However we just want to show the cheapest price for each product option. So iPhone 12 Red 64GB will be sold vendor A, but maybe the iPhone 12 Black 64GB will be cheaper at Vendor B. Hence we will fake a proper product page, and instead create it at the collection level. Behind each "fake variant" of that product page (e.g. collection page) we create, there will be a product page. --> this page will be SEO optimized and is the one we want to push
2. However we will have many product pages for each collection page which will not be SEO optimized (and all more or less the same content = many vendors selling the same phone will haver a 99% similar page in terms of content)
=> We are thinking about non-indexing all the product pages in future and focus optimizing only the collection pages (1.). In general, I think it's in line with best practices to focus on fewer relevant than many low-value pages, correct? But does that also apply to situations where a large number of pages will be noindexed, or will this affected the whole website and the remaining indexed pages negatively?
Thanks for your help!
So I'm just gonna have to lay out some thoughts because there is a lot going on here.