A free option which uses your Dropbox account. However, you cannot really embed the items on your own website but instead must send potential buyers to your shop hosted on that domain. Here is an example.
Costs about $49.00 for a single site license and is simple to install and setup:
Bitcoin is an internet protocol that enables the transfer of value over a communications channel like the Internet or radio.
An easily understood application is decentralized digital currency; like being able to send a gold coin as easy as you send an email.
But blockchain technology enables many things like a fridge that can pay for and restock itself or self-driving taxis.