As this is a marketing forum the advice is usually geared to marketing, and I wouldn't knock it. It's just that I have seen potential sellers of physical goods on here trying to figure out websites and advertising and social networking and so on when I would just list the product.
I wish I could do websites or run an ad campaign but I get by on the built in advertising on eBay, Etsy, Bonanza, eCrater etc. I don't know how many sellers seriously consider this option.
So many advantages, the main one being the ability to choose to pay around 13% (recommended) for Google ads/Google shopping which would see you competing with Amazon and all others. Mainly on Google search results in side bar or shopping bar above results but elsewhere too. Top Rated Seller status on eBay will do this for you without extra ad spend.
If the product is sought after and the price is competitive you can't go wrong and may sell more than you would with a website. The only issue might be getting your product promoted over similar products on the site you are selling from. But if you can't do that you'll still get clicks.