It is not a profit center, it is a convenience that helps our building be more competitive.  

Ultimately, people come to appreciate the absolute convenience and built-in security of online accounting services. 

Convenient mountain towns with access to major transportation routes are not significantly less expensive than places on the front range. 

I might like to grab a six pack and pack of smokes just cuz it's so darn 'convenient'.

I would love to speak with you at your convenience. 

You are offering them a convenience btw and asking to be rewarded for making their life easier isn't unethical as long as you are up front about it.

It was not our primary revenue stream but we owned/controlled the adjacent scrap (empty) land and it was a very small (and inexpensive) lot but convenient for 'customers'... but I'd do it again in a heartbeat if I had a similar opportunity.

Please take a peek at my contact info and give me a call at your convenience.  

Assuming you agree with that statement, then you would be buying at the top of the market, which would be exactly the opposite of the saying, "Buy low, sell high", but you have the convenience of potentially waiting out the coming correction and earning some good money on your property while having your tenants pay down your mortgage for you.  

These might not always be the most accurate but will be more convenient.