It is legal. It is not typical, at least in my area. It would be a red flag for me if I was thinking about renting.
My response to this question does not mean I agree to represent you in any proceedings. This information is also not subject to attorney-client privilege.
Yes, it is legal for the property owner and the tenant to agree in writing that the tenant is responsible for the first $50.00 of each repair or replacement that is necessary during the lease term.