Using LEGO display cases as model kit display cases?

[seadude]

Hear me out and let me explain. Please read below.

Anybody here a LEGO fan/builder? Have you ever bought/used display cases built specifically for LEGO sets? What are your thoughts about them? Pros and Cons? Several links are listed further below.

I've been thinking about and on the hunt for a large display case for my 1/350 scale what if future aircraft carrier model ship. BUT.....I'm not willing to spend more than $500 for a display case. I really can't build my own display case as I live in an apartment and don't have the resources to buy my own wood base, acrylic sheets, etc., etc., etc.

After taking a look at some of the cases on the different websites below, the cases do appear to be slightly cheaper which is what I like. But the materials and construction of them have me concerned.
Is 3-4 mm thick enough for the side panel acrylic sheets?
And the black (or white) base looks thin too. How thick is that? Would it flex/bow if a lot of weight were on the base?
Not sure I like all the screw assembly attachment points either.
The LEGO display cases look like they'd be lighter weight than a traditional standard wood display case.
And the cases come in different sizes which may be good for ships, aircraft, tanks, cars, etc.

Don't get me wrong. The cases do look good and are cheaper than the standard wood display cases that people get for their large models. But I'm on a tight budget.

Wicked Brick display cases:
https://www.wickedbrick.com/en-us

How to put together a Wicked Brick display case. The assembly might be similar for other websites too.
https://www.youtube.com/watch?v=viJky2Q9qms

Display cases from iDisplayit.
https://www.idisplayit.com/

Kingdom Brick Supply
https://shop.kingdombricksupply.com/

Brickcessories cases
https://brickcessories.com/collections/lego-display-cases?srsltid=AfmBOorTxfH9FUueOFzPVRzXCRjpORfXxFSIcgcs39pXi9cZ0SXWGT74

[Rick Lowe]

You could glue wood strips (say 1/2 inch square) in an X pattern under the shelf?

And some reinforcing plates around the screw anchor points could be an answer there, too.

[jcf]

This company in New Jersey offers
custom sized flat-pack acrylic display cases: 4 to 60" high; 4 to 36" wide; 4 to 60" long.
The ordering page has pull-downs to select each dimension and generates the price.
Custom Flat-pack Display Cases