How does one get acquired

I have a semi successful startup that generates around $650k yearly in profit, I have lost ALL interest in running this business (think Tony Hsieh running Link exchange) I have been running it for 3 years. I have contacted (via email) most websites in similar industries for an acquistion, without much success.

Do you think I should contact a bank or contact VCs to see if they can find us someone that can sell this company for us?