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Are you an Amazon Prime member?

I am not. I try not to use Amazon at all, but sometimes, as with your books, it can't be avoided. I buy local, from small shops, in cash, as much as I possibly can.

Not a bad idea! My books are available at other online retailers but the prices are usually higher. I just discovered an eBay seller who has them priced 2x retail price. Thanks again for buying some copies!