Ask HN: What's the best way to market website to white collars?

Hi fellow hackers/entrepreneurs,

I'm starting a new venture selling retail products/services to white collar office workers in the city region. What's the best way to target market to this type of audience?

My budget is around $10k.

Any idea is welcome. If you know of any company which has successfully executed such marketing campaign, please let me know.

Thanks in advance!