Auction.com 101

[Alison Hallifax]

Hi all. I'm totally new to this, so please excuse my potentially dumb question. I'm interested in purchasing an investment property at auction and have been looking at auction.com quite a bit. There's a starting bid price, then there's the "unpaid balance" amount under that. If I purchase the property at auction, say from the trustee/ #1 position lien holder, am I liable for that unpaid balance amount? I'm assuming I'd be liable for the 2nd or 3rd mortgages as well? Also, I would be on the hook for any HOA, mechanical and tax liens too correct? Appreciate the education and clarification.