eCommerce setup – site selection advice needed

Hi All;
I'm looking to start an e-store for the first time. I have 16,000 product lines.
I'm hoping not to have to invest too much for the startup and invest more as sales start along. Is there a website anyone would recommend for this? I find most want $50/month+ due to the number of products I have.
I am also hoping to have the ability to upload my inventory list with pics etc to save time as they update often.
thank you!

See original post by Brodie123