I was bummed when I learned Spirit changed the dimensions of the allowed Personal Bag. So far, I have found three bags from Boarding Blue (free shipping) that works for the new size of 18x14x8. All the bags are under $50. Will post more as I find them.

http://boardingblue.org/index.php?ro...earch=+Spirit+ $39.95

http://boardingblue.org/index.php?ro...earch=+Spirit+ $45.95

http://boardingblue.org/index.php?ro...&search=spirit $46.95