Digital BW, The Print

Hello, my question is about the cost per print of the 2400 and K3, what I
did was replace the carts and run the machine until the first cart ran out.
I got 70 prints with size 8x10" image area.  The carts cost me $15.30 each
at the local photo supply.  That is 22 cents for the cart, and seven carts
times that is about $1.52 for each 8x10".  Does this number jibe with
everyone else's experience?
-- 
Thomas Robinson
http://www.historicphotoarchive.com