Unethical behavior for a RotoRooter employee? You tell me...

Today, RotoRooter was called because of a plumbing issue in my condo complex. Basically it was kitchen sinks, garbage disposals and dishwashers backing up, and actually was pretty gross. I digress. While in my unit, the employee of RotoRooter indicated that, while all the leaks were fixed, my garbage disposal is due to be replaced. He quoted his company’s price to do the job and then, as an aside, added that he would be willing to “freelance” the job for way less. When he left, he handed me a business card – not for the company, but for him personally. I assume this is common, but should I take the cheaper job when I know this guy is cheating his company?