Current resident here
You know those pastil key cards that cost $2 to make?? Yeah, they only give you one, and if you lose it they charge you $51 for it. Also, you know those gate openers that cost $4 to make? Yeah, another $50 if you lose it. The trend here is they offer you affordable rent, but chop you at the knees with hidden costs. Those are just two examples that come to mind! I recommend you sign with a place that isn't trying to turn a profit with key card and remote replacements. Also, the lady who informed me of this couldn't offer an explanation other than repeating "yeah we charge $51".
Greystar property management, you are better than this. Change your policy.