Pre-seed/seed VC is primarily about team pedigree and familiarity. If you want to do the minimum work in order to fundraise for a new startup, you and/or your co-founders need to be somewhat successful already (career, past ventures) or be personally close to people with money. This, in addition to having a good idea and plausible large market story. But the main thing to know is team comes first. And then you could maybe do $1M for 20%.

I'm not sure how a 100K-for-20% situation could happen. Maybe a friend or family member acting as an angel. Any VC that trusts the team would invest more and/or tolerate higher valuations.