I think you would be right for all those players (except probably Addo-Carr just under 600K).I think
Kikau, Burton, Mahoney, Fox would all be on solid money + creighton. Would all be about $600,000 to $750,000.
Plus the second rower (club captain) they tried to punt was reportedly on $600,000, which was the issue in trying to get rid of him (a bit like Nofa)
Wasn’t Burton just upgraded to his ‘true’ value or I think that’s what I read
But none of those salaries are exorbitant and in line or lower than comparisons at every other club e.g. most clubs would have (at least) one half on as much or more as Burton, one hooker on as much or more as Mahoney and one if not two backrowers on as much or more as Kikau and RFM. The only salary I think would be above the starting position average is Addo-Carr and arguably Crichton.
The rest of their starting 13 would be well below what most teams are spending in their respective positions.