I've found a little something that other may find useful. All images below are present at code reduced dimensions. Righ-Click and Save or View to see the full sized image.
I order up a couple of what were called 2-Piece Stor-Safe boxes from Paizo.com . In particular, the 100 Card and 150 Card units. they are designed for storing trading and collector size cards, but the dimensions caught my eye the most. They were around twice the width of Talisman card in their length, and their width was about the height of Talisman card. In other words, two stacks of Talisman cards in one box. The questions were (1) would the fit the cards and (2) what about cards in sleeves.
Image 1 shows the basic boxes. One immediate downside was that the 150 ct. box will not fit into the Talisman box. It still might be useful though, because let's face... that Adventure deck isn't going to get smaller, and sooner or latter, I've always ended up needing accessory storage for game cards beyond the base box's capacity. The 100 ct fit nicely with room to spare for possible two boards on top of them. And the boxes are fully smooth on the outside for decently packing them into that Talisman box.
Image 2 show the parts apart. Whether together or apart, the peices are quite sound and sturdy. They have to be for collectors cards. But the test was still to come. If the small one held 100 collectors cards, were such thinner or thicker than a Talisman card? Turns out, the Talisman cards were a bit thinner. I was able to stack over 100 cards, somewhere around 120+ in one stack. So with two stacks in the box, I'm betting one could compression and fit in 250+ in the short box. The taller one is 50% greater in height, so that one will hold at least 375 cards. Image 3 shows the shorter box filled.
Concerning cards in sleeves, thickness of sleeve isn't the only concern. Size of sleeve could affect stuffing cards in. I use the Mayday "gold" 40 micron sleeves. I was able to get about 75-80 cards per stack in the box, so 150+. But some of mine have standard cards AND a printed extra back on photostock. And both stacks fit in with tolerance room to spare. So for those of you who like a sleeve a hair bigger than I do (I prefer the tight fit), I think you'll be alright with these.
Image 4 shows the same box with the same stacks pulled and end-inserted for play. You simply work left to right, and insert discarded cards face front into the back of the left row. You can use a slip of paper before you start and insert it behind the left stack. Discards are put behind the paper slip. This way, you can find the discards, and even its top card, with ease for those special occurrences where someone has to access the discard pile. Once the left row is used up, your pull the paper and move it to the back of the right row.
That's about all I can tell you for the moment except... I'll be ordering up more of these! This is the box for me, even though I'm one of the few who like's making his own custom card boxes. The boxes top half can be easily decorated with adherred paper, artwork, or whatever. There's even enough room on the interior of the inner half to line it likewise... but that's a project I'll report on some other time.
Lastly, for those abroad who need to find these elsewhere, the actual engraved brand on the box is Ultra-PRO . That might help in your searchs if you're outside of the states. Be prepared if you order from Paizo and shipping time at lower S&H is pretty long. These two boxes in one package took about two weeks to get to my by normal US post.