Just organising a third back to back exOSL DONE4 RTW.
I’m fluent in Expertflyer, routing and availability; but I’ve accepted pricing rather randomly and am wondering what steps other RTW afficionados take to calculate and review taxes and charges.

From OSL we normally head to Australia with or without an Asian stop, normally using QR although we’ve also been AY via HEL. I’m hearing that QR. is quite heavy on the charges not just for that leg but for elsewhere in the itinerary as taxes vary by ticketing airline not just by route. Is that correct?

Other that the slow and tedious route of having AA’s RTW desk price different scenarios (it seems to take 20 min on the phone per scenario with their very manual method) or the bug-ridden oneworld tool, are there some online tools I should be using to explore impact of YR/YQ?