I have that saw, and depending on your needs/price range it's not bad. I heat with wood & the 455 is a back-up for me, but it's a good choice for say 1-4 cords a year.
A bit heavy for the power. Not totally bullet-proof like a pro level Husqvarna or Stihl, but generally way more reliable than cheaper saws like poulan, homelite, the 2XX series Husqvarnas...
Check out tons of these saws "refurbished" on Ebay
Will give you an idea for pricing (subtracting $50-100 for lack of a bar & chain & the As Is designation)
If you can't or don't want to tinker with a small engine I'd say walk away from anything As Is.
If you end-up buying new I'd actually recomend a Stihl 290/291 as a more reliable choice.
The low end Husky's have dropped greatly in quality IMO. Their pro saws (nothing you can buy at Lowes) are still excellent. The 455 is somewhere in the middle.