Which i started here (my blog) so some bonus thoughts
The first month was a heavy print month selling assets and needing copies of documents, along with tax return so the quota was well used and as no roll over pages had accumulated would have been chargeable but where not as to being on the trail
Month 2 left some pages that rolled over and as did the third month.
I decided to use all the monthly quota which reflected the status as it used the roll over pages rather than charging us for the extra copies and so have not yet got to a point when roll-over pages expire as there is a limit to them carried over to next month in quantity
In six months i recovered two months quota to be carried over so provided you use some most months and have light and heavy months it kind of works out well
It is spreadsheet-able.- boolean (plan change) and fairly complex if statements (loss of pages over max) are needed
=x+G9-H9 /new month quota + rollover - lost
=IF(C10>F10,SUM(C10-F10,0)) /rollover pages to next month
=IF(C10>100,C10-100,0) /lost pages
=IF(F10-C10<1,0,F10-C10) /over quota pages
=IF(I10/15<=1,SUM(I10/15),SUM(I10/15)) /charge over quota pages
=IF(F10>=C10,1,0) /returns boolean value if you need to upgrade or downgrade printer quota based on over quota. Cumulative lost pages month on month indicate downgrade or justified reason to buy ink cartridges outright.
It works quite well for us although i still have no comparison with non hp ink. Six months in i have yet to go over quota although this new printer is getting more of use* than our non instant hp ink printers so we can avoid over quota page costs .
Provided we dont go mad excess printing – savings on buying ink in the first year still appear plausible even with non genuine hp ink. The elephant in the room is still how much bigger the instant ink cartridges as a comparison which you should be able to see in the image above. Does that mean larger means more savings on standard size ink quantities – is a value question i cannot answer.
As the printer is still new it is not incurring problems so when those begin i am not sure the printer will be desired as a asset after all being charged per sheet means once errors start it means we are paying hp to not print incomplete images an undesirable outcome..
The privacy issue with instant ink still concerns me but apart from a mysterious 69666 error when the printers software crashed its been a pain free experience.so far.. Should the price go up or the terms get worse then i could see the use of non hp ink in this printer
*duplex printing is easier and it is faster.