milesandpoints :
"How much do Upgrades cost to Purchase and are they only available in 500 mile certs? Can you buy Certs with Miles?"
As a Premier you'll buy a book of 4x500 miles for $125 (instead of $200 for general members). You can buy them at check-in if you want. They only come in that increment. Honestly, compared to CO it is $31 you could save but $31 to go in the front is still a cheap cheap cheap privilege. I'm Premier since Jan 1st and was upgraded 24hours in advance BOS-IAD or BOS-ORD 3 times/3 already !
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check it out : The Airline First and Business Class Service Reviews web site at
http://www.stormloader.com/havane/sl...roduction.html