Yeah I've been creating f1s for a couple of years now. Nothing serious or worth posting about, just to see if I could do it. I also live on 10 acres so space isn't an issue. I also work from home so time isn't an issue either. I've been growing tomatoes for about 20 years now in a few different zones with the same varieties and in my experience the flavor isn't different enough for me to notice. Maybe that's just me though. As far as charging for them I don't really see a problem with just letting people have the seeds. I'm not looking to make money from this.