IVF Clinic package or ARC Fertility package?

I’m getting ready to start My <a href="https://glowing.com/glow-fertility-program">IVF</a> cycle on 4/2 and my clinic offers a retrieval with 2 transfers for 17k. This cost includes my baseline, ultrasounds, blood draws, procedure and pregnancy test. I did some research and called ARC fertility and they said they offer the same package (retrieval with 2 transfers) for 15,500k. This covers baseline, and up to 5 ultrasounds, blood draws, procedure, 7 nurse advice calls, etc. I’m not financing I’m purely just looking at it in a way that would be a 1,500 savings.

I told my docs office I was going through ARC and the finance person said she doesn’t suggest going through them due to the limit of 5 ultrasounds and blood draws bc I would have to pay Vios for anything over that.

My question is... do you normally have over 5 ultrasounds? I’m a first timer so I’m just trying to have all the info before deciding.

Thanks!