But it you call around it is not unheard of to find someone willing to design and install the same system for $21,000.

(If you’re not familiar with the world of stock investing, that’s practically unheard-of.)How much passive income are we collecting?

It was an unheard of wage at that time.

Just because they are unheard of to you, @Steve Vaughan, doesn't mean they're rare. 

They receive an odd mailer from some weirdo that claims they can buy their house in cash.OMGoodness Charles.. that is unheard off.

Since you have it at $100k, you stand to make a very hefty profit.Now, with that said, I will state that I have a very large doubt these figures are correct since you would have been able to lock this up at a 51% deal which is practically unheard of in today's market.

Employees are much more likely to be classified as independent contractors, work in the uber-economy, or if they do work for a corporation staying with the same one your whole career is almost unheard of these days. 

In my location that is unheard of and anything close to an acre is snatched up in a few days.

Many section 8 tenants in Balt do tend to stay for a very long time, ..5+ years is not unheard of.

Purchasing real estate at retail prices and renting them for cash flow is unheard of in a lot of markets.