Hi,
So far in my (short) growing career I have germed 17 (non-femmed) seeds and got 4 females (2 from each grow). That's a 23.5% 'success' rate. I only have room to flower 3 plants anyway so it's not really been a problem, but I can see how people could get frustrated at spending a month or so nurturing their plants just to see their balls drop.
However, I personally think spending 3-4 months then having some turn hermie and ruin a crop would be worse for me. After reading a lot about growing I don't think I would fork out double the price for some seeds that have been tampered with in some way.
Hell, I wouldn't pay more than £30 for a packet of seeds anyway which means only Skunk #11 would fall into my budget, and if I want skunk it's not exactly difficult to obtain. The reason I grow my own is to get something different from what the dealers can supply.
I'm just waiting for the day when all my germed seeds come up as girls and I have to cull some to allow them room to flower.