It's very different for each lady.

On my stim cycle, I had just turned 28. I had polycysts on my ovaries. My FS put me on 112.5 iu Gonal-f per day.

I had over 20 follicles on each ovary, and we had to bring the EPU forward because I was risk of OHSS. They collected over 20 follicles at EPU and 18 were mature eggs. I then had a "mild" (but still not very nice) dose of OHSS. My FS said that he had put me on a low dose of Gonal-f because of all the factors above, and that I was lucky because another FS would have put me on a higher dose.

So yes, it's different for everyone, based on your own biology and fertility, age, and whether you've had treatment before. The first stim cycle is always a bit of a hit-and-miss because they just don't know how your body will react, and they need to weigh the risks with the benefits.

FWIW, I know a 43 y/o woman who was on 450 iu Gonal-f, and she only had 4 eggs at EPU.

Good luck.