French Doors can be inexpensive at local big box stores such as Lowe's or Home Depot. They can even come with the door jamb installed (Prehung) - I used to stock them and they are heavy. But they are well worth it.
I would suggest finding a local handyman or contractor to help you with the door installation if you are not too famililar as improper installation can lead to future problems. Finding an outswing unit can be a tough search but not impossible to find, they are usually priced differently though.