Yes but you can't use that premium on most of old worlds.
But i took my time and calculated this. If you were level 99 on w13 (sorry, dunno what AP/SP rewards were available on other worlds so far) and solved all quests to gain best SP/AP rewards except the gold rifle quest, and reached level 120 in a short time... You'd have 131 AP and 396 SP on level 120, right?
And now you respec to pure FMS... That means you'd have 1088 LP in graverobber job if your equipment is this:
Fancy Stetson
Fancy leather jacket
Moccasins
Brown shawl
Granmont's Pistol
Mustang
Fireworks rocket
Scythe
Based on the Sly's formula (
http://forum.the-west.net/showpost.php?p=525671&postcount=5), with 1088 LP the best item you can get then is of value 5223$. With premium it's 7834. So seems I was wrong saying we'll be able to get 8000$ items from that job. Sorry for misinforming.