Low sperm count & IUI success?

Ashley
My husband and I have finished our testing with our fertility dr. Turns out everything is good with me and I have a high egg reserve/plenty of eggs and no issues and hubs has a low sperm count. She said anything below 15 million is considered low and his count was 6 million 😕. Has anyone had pregnancy success with their partner having that low of speed count or did you have to use IUI OR IVF?
Has anyone had IUI success? Our fertility Dr. Told us it's only a 8%-10% success rate, I'm wondering if it's even worth it or to just save for IVF.