Add Product and Shipping to SquareSpace

I need assistance with adding a new product to my SquareSpace website and configuring shipping costs at checkout. The ideal candidate should have experience with web development and e-commerce platforms to ensure a seamless integration. Attention to detail and the ability to troubleshoot any issues that arise are essential. This is my existing Website www.vectordrive.com.au I have a new updated machine that I want to highlight and offer a special price for the first 10 deposits.