I agree. For me to knit that swatch, it would cost me a minimum of $20.00 in time alone. That is going by $4.00 an hour. I am not a very slow knitter, but I'm not fast either. Now, if the swatch only took 10 minutes to knit up, yeah, $2.00 would be okay for labor, but I'm sorry. I can't afford to be that givng. I don't buy cheap yarn, so my stash isn't something I'd willingly just give away, and my time is money.
I really don't think to many people are going to do this for you, unless you can offer them a % of the total profit from the bag they essentially are making for you.
I'm sorry, but that is just how I feel about it.