Perfmon can get everything except the response time. For that you could potentially leverage CURL (assuming an HTTP interface for your application). There are lots of options which can get you both on the commercial front, all you need to do is ask management what is the value of the information so you can appropriately look at the commercial options and their prices matched with the expressed value.
If all screwdrivers are free and all hammers are expensive, would you really be better off driving nails with the butt end of a screwdriver? Sometimes the "paid tool" has value in both efficiency and in interfaces that the free tool lacks which reduces the overall cost of ownership for the paid tool to the level at or below that of the free one. (resisting the free dog or free car analogy...)