Hey @anoop54 just read through your thread and that’s a great question. As you may be aware there are a lot of people selling MOSFET switches (including me) but none of them are really under $30 and that’s for a good reason, it’s a pain in the ass. By that I mean that pretty much all the people who sell the switches build and solder them there selves and, it’s not easy as I’ve learned. They really only cost, at least for me, ~$15 in components, but the testing and soldering and the time it takes is the reason there expensive. You could for much less build your own switch, but most people don’t want to do that because they don’t know how or don’t trust themselves to do so.
Moving on, about your idea of using a voltage divider or regulator to drive the ~10V VGS of most FET’s. First of all, there’s no need to use a voltage divider for the insanely small amount of current the VGS requires to be saturated. Next is why not to use a voltage divider as I use to do. The main reason is that the voltage output changes with the change in the source voltage, by that I mean if your using a divider to get 10V at 24V(6S) when someone is then using like 50V(12S) the output will be totally different and could destroy the FET. What I recommend you do is use a 12V Zener diode like I use to get a constant 12V for the VGS, no matter the input voltage (as long as it’s above 12V obviously). And then about the switch on the VGS, well that’s exactly what most people do including me lol.
Anyways I hope that cleared up your confusion on the topic and if you’ve got any more questions, let me know!
P.S. I use 12V for the VGS because I like to keep it a little above 10V to make sure the FET is fully saturated, and usually FET’s have a max VGS of 20V.