Curious, so I checked. A Briggs and Riley Essential 22" Carry-On Expandable Spinner is $729. Sorry, but that's insane.

I admittedly travel less than I used to but I bought my basic carry-on for about $110 more than 20 years ago. Close enough to "buy it for life" for me. It's not much worse for the wear, I fully expect to have it for 20 more years.