E-commerce VS Shopify - price - SEO

I’m new in Bubble. Before of writing there I 've read several comment about my doubts in the forum bat I still have already some question:

  1. I’ll to create a marketplace of cosmetic product (total max of products in backoffice/database =150). Why should use this platform rathen shopify? What are the benifits since SEO, From everything I’ve read in this forum , is not GOOD?
  2. You, experts, suggest me it?
  3. How much could it cost a simply marketplace in bubble (also an approximate range, It’s ok for me)?

I find Bubble amazing, for what. can do, but I’m afraid to mistake for performance(could be too slow to load products?) and SEO for indexing. .

Thank for anyone answer