As one of its daily deals, THAT DailyDeal offers this Women's Sunglasses 8-Pack for $9.99 plus $4.99 for shipping ($1.87/pair). That's tied with our June mention as a very low per-unit price for such a selection of branded sunglasses. This pack includes a mix of sunglasses from ESPN, USA Olympics, X Games, Eagle Eyes, and Panama Jack. Deal ends October 29.
Also available is the 8-Pack of Men's Sunglasses for $12.98 plus $4.99 for shipping ($2.25/pair). That's another very low per-unit price.