How do you pay your rent on a credit card? I'd imagine you do that to get rewards of some kind?
FWIW in months when I buy expensive plane tickets or make reimbursed purchases I skip paying rent with the CC.
I do not miss mailing checks in, and I do not wish to ever do it again.
Bank transfers really ought to be easier to do than they are.
They eat the couple percent in transaction fees. In return, almost all of their tenants now pay online and instead of the property manager chasing people down for money, everyone generally pays on time (or, in a number of cases, early).
Depending on your priorities, "not having to chase people down for money every month" might be worth paying the $500/mo.
My last apartment had the same option, so I think it's pretty common.