6-foot tree in 5-gallon pot.  $99
Zone 3.   Another reliable apple with a slightly earlier harvest than others.  Green with red blush.  Nice size with a sweet flavour that is good for eating fresh, apple sauce, pies etc.
 
Trees will reach a mature height of 15-20 feet and a spread of 12 ft.  Apple trees should be pruned for improved production and easier picking!
 
*Apple trees in rural areas need a cross-pollinator to produce fruit (urban centres have enough pollen in the air from existing apple trees). Be sure you have 2 different types of apple trees to achieve cross-pollination.