on/with/by my measly salary

[Mnemon]

a. I can't afford to buy a car on my measly salary.
b. I can't afford to buy a car with my measly salary.
c. I can't afford to buy a car by my measly salary.

Hi.
Do they all work for you?

 

[Glizdka]

I like B the most.

 

[Rover_KE]

I like a best. b is OK but c doesn’t work.

 

[Skrej]

I like a best. b is OK but c doesn’t work.

Ditto for me.

 

[probus]

In assessing the preference of the estimable @Glizdka for b), keep in mind that he is not a native speaker. I concur with Skrej and Rover: a) is best.