For brand new under $1K (list price) there is Monitor Audio ASW210 ($999) and ASW110 ($699). Also REL Q100E ($999).
There are usually some new/refurbished Monitor Audio Subs on eBay that go for around $650(210) and $450(110) with warranty.
For used under $1k look for a used REL Stratus or Vandersteen 2W.
There are usually some new/refurbished Monitor Audio Subs on eBay that go for around $650(210) and $450(110) with warranty.
For used under $1k look for a used REL Stratus or Vandersteen 2W.