Revell claims to make about 10,000,000 kits a year.
there are about 1,000 kits in their product line.
That makes for about an average of 10,000 units per product item world wide.
1 in 5 would be 50,000
1 in 10 would be 100,000
1 in 100 would be a million, world wide which I what I guessed before.