Squarespace Product Page Build

I already have a Squarespace site up and running; what’s missing is a fully-functional shop section. I need someone who knows the platform inside out to turn a blank storefront into a place where more than 50 physical items can be browsed, added to cart, and purchased without friction... (Budget: £10 - £15 GBP, Jobs: eCommerce, HTML, Inventory Management, PHP, Squarespace, Web Design, Website Design, Website Development)