Amazon offers Adobe Photoshop Elements and Adobe Premiere Elements 13 for Windows and Mac for $79.99 with free shipping. (B&H Photo Video charges the same.) That's the lowest total price we could find by $20, outside of the prices below..
A close price: Buy.com via Rakuten Shopping offers it for $82.24 with free shipping. Meanwhile, Newegg sells it bundled with a $20 Shutterfly Gift Card for $89.99 with free shipping.