The "What Have You Been Reading?" thread prompted me to post this.

From now until the end of 2021 all books (except two) are 50% off with free shipping.

Link

Already ordered the two I mentioned in that thread as my next reads.

Thank you for posting this sale. I looked through the list of books and I find I am in need of a lot more bookshelf space!

....there's a few Norman Polmar and Norman Friedman books I wouldn't mind having