MOSFET current limit

I'm currently using relatively expensive MOSFETs (IPS6021) that have built in over current and over temperature protection. I do not use the "diagnostic" feature of the device.
I would like to use the much cheaper simple MOSFETs and use external circuitry for current limiting.
The goal is to have a high side switch capable of ~10A @ 12V. The current limit does not need to be precise, but below the MAX current rating for the MOSFET I choose.
Since these switches will be used in large quantities, a $1 per switch savings does make a difference.
Any suggestions?

P.S. Perhaps there are cheaper self-protected MOSFETS.

How much voltage drop can you tolerate for this current limit?

An easy way to limit current is to use an NPN transistor to sense the voltage drop across a resistor in the MOSFET source circuit which then reduces the MOSFET gate voltage, but that requires about a 0.6-0.7V resistor drop at the current limit value. (See this for example).

How about a PTC Polyfuse?