This is a very nice report, and these guys run a VERY nice unique site. Brickset only went so far, but Brickpicker is way more comprehensive.
I'm not sure which way I lean on this matter. On the one hand, I LOVE easy money, but it's kind of "dirty", in a sense that you are doing this to fellow new collectors or returning collectors, I see this. I am not big into collecting to resell, I do have some sets I have to resell, but only to pay for future sets, I know I'll want. As we all know, this can be an expensive hobby... On the other hand, I look at it as a way to get what you missed. Had it not been for people reselling sets, I wouldn't have many, that I otherwise, would not have. That said, I am not one to drop hundreds over RRP on one set (except for 4999 Vestas Wind Turbine, thankfully acquired for under $350), but I'd never pay much more than that for another retired set. Those who hold these sets for resale give a second chance for those who missed it first time around. Quid pro quo: all good things, come at a price.I'd just like to see where some of these sets (modulars, UCS, etc) will be, price wise, in 20-30 years.
Those poor fools... I just saw that on a History show 'Mankind' a week or so ago. I don't think I'll be forgetting that anytime soon.