The OP wrote $65 (in Fort Worth, TX). Was the $65 true? It's $99.99 in Long Beach, CA?
You never can tell what Costco is going to have. I think they depend a lot on opportunistic buying for things like these tool chests. This one looks nothing like the chests I got.
Take a drawer out and look at how the bottom is attached. If it is just stapled onto the drawer,with no rabbit joint,it will not hold much weight,possibly. I have heard of the bottoms falling out of wooden tool chests. The bottom needs to fit into a groove near the bottom of the drawer. Metal is best,but if it is inlet,1/8" plywood is o.k.,too.
That first picture just shows rabbits{groves} instead of metal drawer guides. What keeps it from coming out of the chest when you pull it out past half way to get the tool bit in the back ?
*********Just Saying**********Gator**************
Frankly,I have not been impresses by the new Gerstner chests. They say made of quarter sawn white oak. But,it is hard to find a drawer that shows the medullar ray structure that truly quartered oak really has, Their "International" chests are made of red oak,I think.