Ya, I've seen these. It seems like the fee would likely be more than the value of the reward making it a losing proposition? Just wondering if the OP found a better way.
FWIW in months when I buy expensive plane tickets or make reimbursed purchases I skip paying rent with the CC.
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.
I do not miss mailing checks in, and I do not wish to ever do it again.