Is $18.25 a good price per month for a Samsung Galaxy s4?

It might seem like a good price. Depending on how much income you make a month, $18.25 might be a very small fraction. The first thing to do is to calculate how much payments you need to make until the Samsung Galaxy S4 is fully owned and with that total subtract it from the retail price that it fully sells for. You will figure out how much more expensive the interest is when you make slow payments.Sometimes monthly payments seem small but end up big without the person realizing it.

Just the phone or for minutes too?

The phone itself Is free on contract from Verizon and att right now.

The way cell phones work these days...it makes sense to be on a family plan. I'm 30 and still am on my parents account. I just pay my share which comes to 55 a month and a rediculous data plan we barely use 1/3 of.

It depends how many months you have to pay it.