This ink information is probably not new. But as the issue is frequently raised, here is what Epson have to say about the ink usage on the A3+ R2880.
If any maths genius feels willing to calculate the true cost based on the information that would be a useful addition. Each cartridges cost me around £9 here in the UK, but I've seen it for sale at £12.
Note that the test prints are NOT photo prints. I can well imagine a true photo print on a thick and very absorbant paper such as Hahnemueles "Torchon" would be far worse. Unfortunately the ISO test ignores us!

