I don't think many posters here really understand cruelty of MTT-swings. Last year got stream of 40 tournaments in a row with 100+$ buy-ins with no cashes at all. Gladly took 6,2k$ from 215$ NLO8 (first one I ever played) just prior New Years Eve after that, though even without it I would have still been up 5-figs in 2013. And my average buy-in is prob between 20$-30$, so those swings hurt quite much.
+10% ROI for MTT-player is just lol. Unless you're MTT-rakebackgrinder and have a rich daddy to back you, swings will kill you. Especially if you're planning to play COOPs. Hate TCOOP, by the way. Sufficient ROI should be at least 30% in MTTs, and I'd generally call good player to be one with ROI 50% or more. Ofc there's expections: if some player plays 100+$ regfests 16+ tables at a time it's understandable that even best players have (much) smaller ROI.
I have been planning to sell some of my weekend-action at least in larger O8-hi-los, too. Though I have really healthy bankroll (over 30k$), it's just sometimes too demoralizing to bust out from all big ones and then concentrate on grinding tournaments ten times smaller buy-in with 1st prize being even smaller than buy-in in those bigger ones. With 20-30% mark-up it would even be wiser than grind some 20-50$ tournaments where I would prob have much better ROI. With O8 you also have additional problem which is that you usually just can't get enough tournaments if you choose not to play bigger (buy-in) ones.
But I still plan to play bread-and-butter-tournaments on my own. At least most of the time. This year has been horrible in O8 for me, so far ROI is even negative (some games in Full Tilt which have been very Tilting, but most games in Stars) while last years ROI was about +150%:
http://www.officialpokerrankings.com...3EDE3.html?t=3
Mddgfc's selling topics seem very legit to me. If people can't understand that 80% * 1,25 = 100% problem is theirs, not his. And though I'd never invest in player who takes that high mark-up with reasonably low ROI, I won't mind if someone else buys parts of him. Make your own topic and start freerolling, if you have gifts for it and quit whining.
Just final note: I'm not poker professional and not claiming to be one. Poker is just a nice (time-consuming) hobby alongside studies, winnings ofc makes life easier. I also occasionally buy small shares of good players for fun, but it's too time-consuming to try make a decent $/hr out of it.