Yes, there were plenty of sales. Although I'm replying too late for you to use them, at least you can keep your eyes peeled for sales closer to Christmas. Andrew Christian had a 20% off sale (which honestly isn't that special, because they almost always have a 17% off coupon code you can get), and it stacks with things that are already on sale/clearance, so you can get some really good deals. 2xist had a 35% off everything sale, with free shipping too, I think. Some underwear reseller sites like freshpair also had various sales on many brands. Even Macy's had a few great deals on certain pairs.
Another tip: amazon sometimes drops the price on items (including underwear) for no reason. Consider setting up price alerts at a site called camelcamelcamel. (strange name, but google it).