IF you want to run 1 direction only you can use any transistor or MOSFET rated for more than 1 amp. But if you want to be able to reverse the motor you will need to make an H-Bridge and that will probably cost more than $10.
IF you want to run 1 direction only you can use any transistor or MOSFET rated for more than 1 amp. But if you want to be able to reverse the motor you will need to make an H-Bridge and that will probably cost more than $10.