Don't mind at all. I purchased lot from a fellow Brickpicker back in February/March. Consisted of 250+ lbs. He had done some initial sorting, but finishing that and washing all the parts took about a month. I have been ordering parts as I go, inventorying about a dozen sets or so going by theme.(Had over 100 sets in it from 2005-2009 timeframe)
Overall, I'm sure I've made minimum wage due to that hours put in sorting, but was able to keep some really cool sets like an Emerald Night, Motorized AT/AT, 7993 Service Station I've wanted for a long time, random figures, etc. etc. Between what I kept and sold/end up selling(have about a dozen left), I'll make a few thousand profit on a few thousand investment. Was hoping to double my money and I'll be darn close to doing it. This takes into account parts ordered, but not time or anything as I don't lose normal income due to working on this. I've kept a spreadsheet just for this lot to see how it goes. I'll also be taking a long break from doing this again as well.