I needed 25x4 boxes for my new faux. I was prepared to just order the acrylic ones from DCG but decided to look around to see if I could find the flexible plastic ones. I'd seen these before and they are just about indestructable. I found them in one spot:
http://www.pokersupply.com/chipbox.html it's a yahoo store so SOMEONE is supplying this small-timer with them. A little pricey but I'm happy with them.
25 FC perfectly fit.
You can twist them as hard as you like and it doesn't seem to stress the plastic. They hardly twist when full of chips.
They are also not loud when dropped on the floor. I was pleasantly surprised when that happened... I dropped an empty one and winced in expectation of that acrilyc rack "clatter". This just kinda went, "clunk".
BTW, that guy's dealer buttons (5 for $2.49) are the good, engraved kind. The yellow cut cards are completely opaque.