I sold at least 4000 copies (over 19 different titles) last month. I've lost track of the exact amount because one book was a freebie on Amazon UK part of the month, and I'm honestly not sure how many copies I sold and how many I gave away. I have also sold an unspecified (but probably reasonably substantial) number of books on iTunes in the past month. I'm waiting eagerly for Smashwords to update to find out how many I sold there!
Overall, sales were down on Amazon and B&N, but I did have one hot romance that sold over 500 copies, which helped my sales numbers.