My Personal Experience
About 10 years ago I was diagnosed with vericosciles (sp?) which basically causes blood to pull in the testicle area, the temperature rises, and the sperm counts plummets. I had out-patient surgery to correct that and after about 6 weeks the count went from from 0 to approximately 10 and the motility was OK. My doctor put me on Clomid and the count increased just a tad to 12. The normal sperm count is around 50-60, so you can see that I was way below the average.
One thing we tried was this: I would go to the doctors office 3 times a week and give "samples". These samples were frozen at that time. When the time came for the IUI, all samples were thawed, washed, and prepared for insemination. So you can see that instead of doing the IUI with a sperm count of 10, we were very close to doing the IUI with a "regular" sperm count. You might want to think about doing that.
One thing to keep in mind.....I now have 3 sons and they were all IUI babies. 2 were twins conceived with an IUI with a sperm count sample of 2! It only takes 1 little spermie to make it happen.
Let me know if you have other questions.