I must be missing something here as I can't access that info on my similar model iPF6100.
Print logs only go to 100.
To so readily dismiss a used 44 inch printer with a huge new price tag compared to iPF5000/iPF6100 because of print heads seems strange.
Is the OP in America or ?
'Yes' we have the 300 series and yes it's used. But we don't know it's asking price do we?
Look at the general condition, ask a Canon LFP service agent/reseller for advise.
First, it's the Status Display, not the Print Log in Status Monitor > Information dialog that summarizes total usage. Sorry, I didn't make that clear.
Second, I'm assuming from the OP , perhaps wrongly, that the printer has no ink, and thus is unable to prove normal function. Printhead failure (I've had two in four years in my 5000) would be the most common reason. A set of "small" 330ml tanks is $1962 at ColorHQ in the States, and the cheapest price I found in a brief search was $500 for a PF-03 printhead - two needed.
So here we are, with my assumptions, almost at $3000 without paying a penny for the printer itself, just to get it going to see if any other problems were evident. ColorHQ currently lists the fabulous new 8300, which comes with full 330ml tanks, at $3350 after a $1200 factory rebate.
In following the Canon LFP Wiki for years, it has proven very difficult to get rid of a used printer, with things usually ending in just selling the remaining consumables at a discount and taking the carcass to an electronic recycling center.
Pete