While WindowsHackers.com is a very nice domain name for a community-based site, Microsoft wouldn't be a big fan of such a site if it were indeed developed. If you sold the domain, you could probably get mid-$XX to a reseller or mid-$XXX to an end-user. If you were to develop the site, however, I could easily see this domain along with a related website sell for the low $X,XXX range.
AdvancedAutomobiles.com is nice too, as it has alliteration and could possibly be the name of an automobile-related business. To a reseller, I'd see this domain selling for low-to-mid-$XX. If you found an automobile company named Advanced Automobiles, this domain could be worth $500 or more, depending on the size of the business that buys it.