Thats cause thats how they are classified on cars.com. Can't blame the developer. He scrapped the data correctly just some smart ass marketing guy who put up the ads cheated...

Dealing with bad data sources is like product development 101. You're not supposed to "blame" the developer, but pointing it out and expecting a fix is fair.

It's a weekend project, but even weekend projects evolve with free time.

It's a deceptive listing, but in the description on cars.com you can see that these are $299 per month for 72 months

Google Refine is a great tool for finding and fixing anomalies like this in your data sets:

http://code.google.com/p/google-refine/

Maybe a price filter? Let us manually set the minimum to $1k.