Has anyone used Amazon installation services?

[Dee*Jay]

I need to replace a large blind in my bedroom ( 87 wide x 82 high) and it has to be mounted into a concrete ceiling. There is an option for installation services and I'm temped to try it because it seems like a very good price to do something like that ($140 for installation), especially if it really is done by someone who knows what they're doing.

Has anyone used this type of service (not just for blinds, but to have anything professionally installed or done) through Amazon?