I am selling a 5 gallon plastic (PET) carboy that is used for brewing beer or wine. The description from the website is as follows:

"Your days of lugging heavy glass carboys around are over! Our Plastic Carboys are made from PET plastic (same as 2L soda bottles) which is far more resistant to oxygen than regular plastic. They’re much lighter and safer than glass, which is good if you need to move fermenters around to find the right temperature in your house. Full carboys can be heavy and hard to maneuver and glass can break resulting in possible injury. They’re more economical than glass. It’s easiest to clean them with an overnight PBW soak, shake, rinse, & sanitize."

You also get the rubber carboy blow off lid shown in the picture (the orange cap). The carboy sells for $25 new and the lid is another $3 or so.

https://www.morebeer.com/products/plastic-pet-carboy-5-gallon.html
https://www.morebeer.com/products/rubber-carboy-blow-hood-wwhite-caps-3-5-6-65-gallon-smooth-neck.html

The asking price is $15.