The Google, Inc. (NASDAQ:GOOG) Nexus 7 tablet computer manufactured by Asustek Computer Inc. (2357:TT) is considered by many to be the most popular smaller-sized tablet in the market. Even with the Apple, Inc. (NASDAQ:AAPL) iPad mini due to hit stores by today, Google and Asus are expected to do well on the sales charts, especially if the previous month’s sales are to be considered.

There now may be some figures to back that up, according to a report from The Wall Street Journal. Asus’ Chief Financial Officer David Chang told the publication this week that from an initial 500,000 units shipped per month in the summer, about 1 million Nexus 7 tablets have been sold in the month of October.

This is in line with analyst forecasts of Google selling about 800,000 to 1 million units in the September ending quarter, or the third quarter of the calendar year 2012.

Although these figures pale to Apple’s 14 million iPads sold in the September ending quarter, Google is keeping the Nexus tablet line up to date, with more storage available on two recently announced variants. The 8 GB Nexus 7 has been phased out, while the 16 GB version, which once cost $249, has been re-priced to $199.

The 32 GB Nexus 7 variants will cost $249 for Wi-Fi-only connectivity and $299 with 3G support included. Another Nexus tablet, the Samsung Electronics Corp. (005930:KS) Nexus 10, was also announced Monday, and will come with a 10-inch screen with high-definition (HD) resolution of 2,560 x 1,600.