Hey Mark! I don't know exactly (as I'm not privy to exactly what mythopoeia offers in addition to the PDF), but I do know that the actual PDFs themselves are identical. Itch is my own digital storefront, which I control the prices of myself - I dropped it a while back in recognition of being out for a year, so it may just be that they haven't mirrored the price drop on their webstore. Regardless, I've messaged the publisher about it and they're taking a look - they may well drop the price on their end too. Thanks for the heads-up!