Scouts vs PT vs PTing Scouts

[July Fourth]

Scout Player bought from market, to get from high-end 6* to get to low-end 8* will cost around 250 green packs.

[t0m.-]

Scout Player bought from market, to get from high-end 6* to get to low-end 8* will cost around 250 green packs.

thank you for that answer!
for me , that means id rather stick to 2 scouts than 1scout and PT him for the rest of the tokens , since 250 is alot.
may i ask how you calculated these? is tehre a formula?