You asked
Is the sony nex 5t worth buying used?
I can't tell you what the NEX-5T costs used, because this site doesn't track prices. What I can say is that it's a 2013 camera with a 16.1-megapixel APS-C sensor and no in-body stabilisation, so its lenses need to do that job. Its E mount is a big plus, since there are plenty of lenses to grow into.
If you buy one, budget for a new genuine battery, because old ones lose capacity. For an everyday kit, I'd look at the Sony E 18-55mm f/3.5-5.6 OSS or the Sony E PZ 16-50mm f/3.5-5.6 OSS. For more reach, the Sony E 55-210mm f/4.5-6.3 OSS is a sensible pick.
Used gear is generally worth it when the body is a generation or two old. Start with buying used, and check the Sony NEX-5T page for the full lens list.
Written by Claude from this site's pages.