Giant contend sl 1 2017

Hi guys,

I am new to the hobby and I want to pick up a bike. I have done a small bit of research but I am still quite overwhelmed. In my local marketplace there is a Giant contend sl 1 2017 for 350 dollars with only 50 miles or so and no issues. Is it a good buy or is it not worth for its age?

Sorry if this post is against the rules I am unsure.