bought this brand new last year and used it to protect my DJI Mavic 3 Classic Drone. 

Bought it from Color Cases.

Paid $466.53 after taxes.

https://www.colorcase.com/collections/pelican-cases-air-1535/products/pelican-1535-air-indigo-black?variant=30173737386063

It is in excellent pre-owned conditions.

Info:

Pelican™ Air cases are the toughest and lightest cases Pelican has to offer. Designed with a super-light proprietary HPX² polymer construction, each Pelican Air case is up to 40 percent lighter than an average polymer case, yet still extremely durable. Pelican Air cases are waterproof, crushproof, and dustproof.

The Pelican 1535 Air Case provides protection for a wide variety of gear, from camera equipment to camping kits. It is available with foam, without foam, padded dividers, or TrekPak dividers. The Pelican 1535 Air Case is the maximum airline carry-on size, so you can travel with your sensitive gear close at hand. This Pelican Air case will lighten the load, while protecting your valued possessions.

(Check with your airline for exact measurement requirements)

Maximum airline carry on size*
Waterproof, crushproof, dustproof
Super-light proprietary HPX²™ Polymer - up to 40% lighter
Press and Pull™ Latches
Retractable extension trolley handle
Quiet rolling stainless-steel bearing wheels
Automatic pressure equalization valve - balances interior pressure, keeps water out
Fold down over-molded handle
Waterproof O-ring seal
Business card holder
Automatic pressure equalization valve - balances interior pressure, keeps water out
Stainless steel padlock protectors
IP67 & MIL-SPEC certified
Limited Lifetime Warranty
Made in the USA
*Check with your airline for exact measurement requirements