Ethernet/IP, Modbus RTU, Profibus

I am designing a control system with AB Ethernet I/P (on a Control Logix platform), and I am interfacing with a couple of customer control systems. One is a Modbus RTU slave, and another is a Profibus master. I need a multiple protocol converter that can convert Modbus master and Profibus slave to Ethernet I/P simultaneously . I was considering the Red Lion Data Station Plus, if it would work, but it seems like a bit of overkill. Does anyone have a suggestion for another device that I could use?

Thanks.

$

The Data Station Plus lists at $499. Still sure it's overkill?

Although, to be fair, the Profibus card would be another $395.