Assuming that there really is a $.25 difference in favor of the Brother 782 then you'd be spending $2000-$2500 more to own the Mod1 per day. So that $35000 difference would disappear in 14-17.5 days. After 14-17.5 days you'd be doing yourself a disservice by using the Mod1What about doing 8 to 10,000 prints a day on Mod1's ?
The cost per ml at these levels fall into a different category.
This is based purely on that $.25 difference in price per print and ignores all other factors. So take it with a large grain of salt.