A good warranty should be a factor in any purchase you make, including speakers. That said, speakers are generally very reliable pieces of equipment. For me personally, as I tend to buy used, I would not consider the lack of a warranty to be a deal breaker. This of course is dependent on age, condition, type of equipment, and from where and whom you are purchasing.....I would tend to be less concerned about a lack of warranty if looking to purchase speakers as opposed to other components.
There's a pair of used Totem Hawks near me which are tempting. However the comments of this 2011 review of the Hawks show several users with damaged drivers needing replacement. I want to say its because the long throw Revelator but then one person blew out their tweeters. Is this a model specific thing?
https://www.youtube.com/watch?v=rTVS0GCwNxg