Today’s sitewide eBay coupon doesn’t work on gift cards, but fun fact: PlayStation Plus and Xbox Live Gold memberships don’t count as gift cards. The coupon is good for $15 off any $75 order, so in both cases, you’ll have to add two years to your cart to get the deal. That should get you 24 months of PlayStation Plus for $91, or Xbox Live Gold for about $85.
Just remember, you’ll need to use PayPal to have the option to enter the promo code (PSHOPSAVE15), and this coupon is only valid until 9 PM ET.