Yes looking for non-pokemon boxes yields much cheaper/ sensible card board options... like say this beauuuutiful slide out shoe box, for 2,80 Euros : That's more like it...
Yeah, the point was to go to a card shop, not slAmazon, where you're paying a small fortune because the boxes, even folded flat, are too big to fit in a Amazon baggie. Shoe boxes work well, but the dimensions won't fit your envelopes or crack baggies as perfectly as a trading card box does.
If you're willing to rethink your process and orient your envelopes/crack baggies horizontally, you might look into index card boxes. Usually quite cheap, even from Jeff Bezos' Online Shop of Horrors.
mnem
I am willing to rethink anything if it can lead to what I might consider an improvement !
In the case at hand, pun, I don't see the point of putting the envelopes sideways, would need to redo all the labels, only to so I can spend money on a plastic box... that will then be thrown away when I get to build my own wooden custom box later on.
So.. only sensible thing to do is to keep my ugly box, because it cost me nothing, it's already there, and already does its job perfectly. When it ain't broke, don't fix it !
Now if I needed 2 dozen more boxes, it would be worse giving it more thinking.. but I only need that one box and that's it. So the problem has already been solved.
If I somehow need more in the coming weeks, I guess I would just replace that one, with a show box divided in two, or make a custom cardboard box. In H/W stores the 40X40x30cm cardboard box costs only one Euro. Would give me plenty enough cardboard, to make several shoe sized boxes to store thousands of little envelopes, with the bonus of being a custom job so I would be able to design the box dimension to fit perfectly into my drawers so as to not waste any space. Custom, to me, is where true luxury lies...