Limit the total bytes transfered?

[Michael Best]

Has anyone got a method for limiting the total number of bytes 
transfered with rsync?

I was thinking running with -n and then using the output to check how 
much will been transfered.

I ask because a client had a broken filesystem that occasionally has 2T+ 
files on it (broken filesystem, so they weren't actually that big) but 
we happily ran up a huge b/w bill with rsync.

-Mike