Low sperm count poor motility

Hello! I am new here. I really appreciate this group!!! I just found out that my husband's sperm count is two million with poor motility. We have a four year old daughter together (conceived without planning) and have been TTC #2 for 3 years. I have a million questions and feel discouraged. We are going to a fertility clinic. Despite having conceived naturally before I am assuming that since his counts are that low and motility is poor & given my age that IVF may be the most viable option? Wondering if we should save the money by skipping IUI?