Call several tire stores and ask them how much it will cost for one tire, with new stem valve and balance and if they have tire disposal fees.
Give them the number on the side wall (Example Goodyear LT 225/75 R16) and let them know that you want the tires new not the ones that have been sitting in the tire rack for some time, there is a manufacturing date, numbers stamped on the side wall, (05 08) first number is the week in which the tire was made the second is the year of manufacturing, these numbers are from my rig, I am going to replace all 7 tires next month.
navegator