Using an online retailer (10-15% discount) I got a 1700 pt 101st Airbourne Force for £70, around $110. 1 box of US Airborne and 2 Plastic Soldier Company Shermans with Fireflys. Now, its not an Uber army, but its fine for getting started with. Coming from
GW games myself, I thought this was a miracle
My first move in
FOW was getting the Open Fire set. I had to put on hold my desire for a horde of Panzers and it was worth it. You get two good starting forces, your handy rulebook and the great "getting started" type guide. All for £45 ~$75
So yeah, I recommend Open Fire before anything
Average Game? Depends on which stores for me. If creating an army, I always go for 1780.
Hope I helped a bit