I'm begginer with shopify products and its api. I couldn't find out a way to add custom products from another site to shopify solution (ps: I'm using Wix (wix.com) as application container, but the search from a specific products will be outside wix solution).
I'll build a complex search system and the products not necessarily will need be registered at shopify, so I'll need add custom products to the shopify cart at runtime.
Also, we need to add transport charge. The shopify solution for shipping rate/tax althought complete, doesn't fit for our scenario...
Could someone help me or guide me for an answer?
Thanks a lot.