If you've never lost your house keys twice ($75 per visit for a locksmith) then it's not worth it. However, you could give multiple people access to the door this way, which would be cheaper/easier than making copies of keys.
Also, with normal keys if you lose one you have to replace the cylinder and all the keys if you're worried about someone using the lost key. This would prevent that expense.
I will say, though: if $150 is the discount price, i'm afraid to learn what the regular price is. Businesses seem like the only place this becomes cost effective.
I hadn't thought about the multiple people access problem since I've never needed more than one set of guest keys at a time, and the offices I've worked in were all big enough to use keycards.
Come to think of it, the market for 'Needs to give multiple people rotating revocable access' is a great fit for AirBnB type services.
Also, with normal keys if you lose one you have to replace the cylinder and all the keys if you're worried about someone using the lost key. This would prevent that expense.
I will say, though: if $150 is the discount price, i'm afraid to learn what the regular price is. Businesses seem like the only place this becomes cost effective.