deni - you can shop around a little for pessaries - i think the cheapest place i've found was $85 for 34 pessaries (so 17 days) - most expensive was $208 for the same number of pessaries - so there is HUGE variance! i think it's pretty standard to require additional progesterone support with IVF over IUI - not that i'm sure, but i think it's something to do with how high your levels are pushed to get the follies, so there is much more chance of it dropping too low and resulting in AF or loss... i'm not sure, but that is the impression i get...

IUI is more like a "natural" cycle in that all they're doing is forcing ovulation - where your body is treated differently for IVF...

and yes, the paperwork i have for my clinic states i'll have to have the pessaries twice daily for 10-12 weeks if i get a bfp - fun (NOT!!!)