They are all relatively the same price outside of Deer Valley and PCMR. Alta and Snowbird are a hair under $100, and they will be a little cheaper at Solitude and Brighton. The LCC resorts, PCMR, and Deer Valley will give a slight discount if you buy from them online, but I have not found anywhere that sells them significantly cheaper.
Powder Mountain is a little under $80, and Snowbasin is $100. I went to Utah for 5 days last year and rode a different mountain everyday. I would recommend the same and the few days you have at the end you can go re-ride the mountains you liked. Other than PCMR, none of them are shockingly huge where you can't get the idea of it in one day.