Facebook is free and simple to use. You add a picture or two a brief description and a price, make it public and its done. You can choose (to a point) what notifications you get and how they notify you - email, pings or whatever.
Facebook also has Marketplace, a free service for buying and selling, an online version of the postcards on a pin board in your your local shop if you like, who's audience is not limited to people you know.
Heres a few screenshots...
Making a website
can be a simple drag and drop affair with various free online programs like Wix, Weebly and GoDaddy. The free ones will give you a website with a name like
Lazarus57.weebly.com as in your name attached to theirs, and often will not allow you to use your own domain name.
You can buy* your own domain name usually between 99p and £20 for 2 years. You do not own the name merely lease it, with an option to renew at the expiry time.
In reality a website is only any good if you tell people what it is, i.e. actually telling people to look at it, it will not in all likelyhood appear in the top ten google pages results for a search on "woodturning in wherever you are" for strangers to find. It takes a long time and a bit of investment to get it there.
Try both you have nothing to lose (but time), my one suggestion would be set up a second or third email address to use for all the signing up and contact purposes, that way if you have a hatful you can just walkaway without getting constant reminders etc.
edit ETV types quicker than me