I agree with you. I answered a similar comment directly above yours. Paul Graham says don't try to make the site perfect, get it out the door as fast as you can. Hopefully it will begin to scale and we will hire a designer to help. Thank you for weighing in I (we) are listening, and responding candidly. We will behave the same way with our customers. This is good practice. ;)

As I see it, it is missing something like:

>Unlike what is common on other FSBO websites with flat fee listings, no MSL listing or co-broke fees exist.

Without it, it seems that in the first part of the sentence the subject is FSBO websites, so that the implied subject of the second part of the sentence is "this site".

You're right! I had the worst time parsing that sentence. I read it as a series that lacked an Oxford comma.