Well, can't speak for polyglot but I regularly come back from my trips (1-4 weeks) with 20-100 rolls. As 80% is B&W, I have no idea what the cost of processing is, although I know it's minimal since chemicals are cheap and I do all my own. Colour is usually slide and will set me back about $5 a roll here in japan. And getting back to the OP, I've had a similar backlog, although I can normally get back to it within the year.
We are heading for Oregon to see our first grand baby. I fully expect to get 25-30 this week.
Mark Barendt, Beaverton, OR
"We do not see things the way they are. We see things the way we are." Ana´s Nin