Jet.com offers the Seagate 4TB USB 3.0 External Hard Drive for Xbox One and Xbox 360 in Green, model no. STEA4000402, for $149.99. Add it to your cart and the price falls to $135.48. With free shipping, that's the lowest total price we could find by $9. (Most stores are charging $150 or more.) The hard drive stores up to 100 Xbox One or Xbox 360 games.
Note: You can also receive additional discounts during checkout by waiving free returns or by choosing select payment options.