I paid $47 (including taxes) on priceline for LAX-PHX on UA Shuttle. Travel was late April. Was going back to LAX from PHX. Didn't get the miles (pre FT days). UA offered $600 + overnite at Phoenix Hilton for taking flight next morning. Volunteered in a flash! Worked afternoon shift at the time so it worked out well! Ended up buying 4 tickets with the vouchers and getting lots of miles!(vouchers come in a book of 4--each was $150). One of my better bump deals!