Here's a TKL Premier Jumbo 6/12 hardshell guitar case in excellent condition. It's fully functional, very sturdy and high quality. It's made out of wood and will protect your guitar well. They are made in Canada. These go for $229 new. Save yourself a bundle!
I used it for an old Gibson full thickness archtop electric with a 17 inch lower bout and a 13 inch upper bout. So it would fit a ES-150 but not an ES-175.
You can also used it for jumbo style 6 or 12 string acoustic guitars of similar dimensions. I don't think it would fit a dreadnought style acoustic