A complete set of the Alan Moore series Watchmen CGC certified 9.8 sold for $2,825 when the purchaser used the eBay Buy It Now option. Each issue was not only certified as 9.8, but each also had white pages.
The most recent CGC Census update noted each issue tied as the highest graded copies with the exception of Watchmen #3. There are currently two copies of Watchmen #3 certified as 9.9 or mint.