PayPal Digital Gifts via eBay offers a $100 iTunes eGift Card for $80. (The gift card will be emailed to you.) That's tied with our mention from last week and the lowest price we could currently find by $20. (We saw it for $75 in October.) Deal ends November 30.
Are you a Costco member? You can get $100 in iTunes Gift Cards (four $25 cards) for $79.49 with free shipping. (This is not available to non-members.)