If you're bronze or silver, willing to give a free boost since those elos are just fun to play at.
Gold - .5 fg per SR
Plat - 1.5fg per SR
Diamond - 3 fg per SR
Master / GM / T500 will have to negotiate in PMs to see if I have the time to do these jobs.
As for vouches, I can only post my Path of Exile account leveling services:
https://forums.d2jsp.org/topic.php?t=77029945&f=107&o=10I have more topics but they're all in the PoE forums.