I couldn't tell you the history of these books(just being honest with you). I just found out about them yesterday via email. Louis can tell you. I've taken the liberty to pm you his contact info.
Regarding the Ammar website, to me it looks like they (Ammar) had found a box of them, not L&L. The page you're linking to is from his shopping cart. It doesn't look like a recent post from his blog, so he is not addressing these 20 books as you suggested in your post. And just because it says they are pushing or encouraging L&L to reprint them doesn't make it a fact. Louis could elaborate on that when you speak with him. I doubt there's a market to reprint these books. If someone just wanted the information, the ebook is available for sale.
Denny doesn't specify how many he has in stock. It may only be that one or he may have a dozen. He may have original stock from when they first came out and never sold them or he went around buying used copies and is reselling them.
I can tell you that on L&L's site you could not order the books until yesterday. This product wasn't in the database.
Here's how we operate the online cart - When we do run out of some products,a DVD for example that is out of stock, it may be a little while until more are ordered. In that case we can turn the product off in the database so it doesn't show up in the shopping cart. We don't delete it, it's just off. When more are in stock, we turn the product back on.
In this case the product wasn't in the database and had to be entered as if it were a new product. The book had been deleted years ago. In fact if you look at this page, which shows the new products: http://www.llpub.com/zenshop/index.php?main_page=products_new
, it shows it was added to the database yesterday.
So from us, yes the product was sold out and has been most likely for several years. If other dealers still have it in stock, that's not our inventory and we don't control dealers. There were a limited amount printed. That amount hasn't changed.
Because more are still being sold at retail whether it's from us or other dealers doesn't impact the value of the book. I understand your point about supply and demand, but no collectible product is guaranteed to increase in value or is there a time frame for when the value may increase.
If there are a number of dealers out there still selling their inventory, what is our responsibility to that? Maybe you want to sell yours on ebay for $300, but you can't because Denny has it for $175 on his site. That's not our fault.