Iguazu falls: IGR airport -> Brazil side -> Puerto Iguazu

Hi all!

I'm visiting Iguazu falls soon, really looking forward to it. I am flying into IGR airport on the Argentina side, looking to go straight to the Brazilian side of the falls then back to Puerto Iguazu for the night before spending the next day on the Argentina side.

The first day to me seems like it might be a bit stressful with a lot of buses back and forth. From what I have read on here and elsewhere, I need to go to Puerto Iguazu centre, get a bus to Foz, then to the falls. Then doing the same in reverse in the afternoon. Given I land at 0945 (assuming my flight is on time) I feel like a transfer might possibly be worthwhile.

I've found a quote for just under $110 for a private transfer covering there and back. What I was wondering was whether people had any recommendations for other providers that might be lower, maybe even a shared transfer, or whether anyone has recent experience of the buses and might be able to give a better idea for costs and timings via that option.

All help gratefully received!