Realistically though a 105 average is in the "no rush" category. You'd take 105 as almost a top 2 average in Def/Fwds. Particularly for 300k.
...........
But having said that 105 average (i think it'll be a bit less) for 300k is rare but amazing if it comes true.
I'm not sure if Rowsus can work his magic and see if anyone has come from 300k to average 105 before?
The cheapest players to achieve 105 average are:
M Barlow 116 in 2010 $111,400 (debut season)
S Martin 112 in 2014 $242,700
B McLean 106 in 2012 $280,800
A Sandilands 108 in 2014 $310,700
A Goldstein 113 in 2011 $320,000
I Maric 113 in 2012 $338,300
Interesting that 4 of the 6 are Rucks!