Hello @leighelliott78,
Thanks for reach out with those questions! Let me try to answer your questions as much as I can 
Native Search Functionality
Currently there are few options on how to use Search Engines within Webflow. We have great tutorials on Swiftype integrations (link) and an amazing tutorial by our Community Expert @sabanna for Findberry integration (link).
Unfortunately we don’t have any native search widget directly in Webflow, but we have that on our roadmap. We have no ETA on that, because we want to make sure we’re delivering you great quality product rather than doing everything to give you functionality on time that could be broken.
Also in one of the recent Workshops @nelson spoke with Webflow CEO - Vlad, who said that we’ll be introducing API “soon” More on that in the workshop to which I encourage you to watch!
E-commerce Solution
Ah yes! Long awaited functionality that we were thinking about. This is a HUGE thing, and we are aware that there are companies that specialise in that only. We hope to build it in the future, but no eta on that yet.
We highly recommend Foxy solution with their tutorial that you can find here: Responsive Ecommerce with Foxy.io in Webflow - Webflow Tips - Forum | Webflow
I hope this answers your questions, but feel free ask more! You can reach us directly at support@webflow.com.
Cheers,
Bart