Your success in finding a lot of opinions here may be some where between dim and bleek.
I have in the past asked for opinions regarding audio components, and honestly those that have a component and are not satisfied with it are going to think twice about listing the cons of the unit, since the sale of there component may be a future plan of there's.
Tyler does make a good speaker. You could contact Tylor and ask what components, i.e. caps, speakers, wire, etc,; what from and how cabinets are made. Tylor has sales at times, at cost way below the stated suggested retail. So what you see listed may not be the sellers actual purchase price.
The best way to tell is find an owner or go to Tylor, see if you can use your own amp, cables and have a listen.
I recently purchased a set of speaker that I purchased unheard. I staked my purchase based on Steve Hoffman's (and others) recommendation. I lucked out in terms of the sound. I really like what I hear. But unfortunately, I was disappointed in cabinet quality details, which wasn't really covered in Steves H. review. So lesson to be learned.
Best of luck, take your time and obtain the facts, before you purchase.
Just remember theres a reason someone is selling the speakers used.