It has been reported that Montana bought out the FarmTrac inventory quite a while ago, almost a year ago, if memory serves, so this isn't news. They merely re-badged them. FarmTrac was also a re-badge company who bought machines from several manufacturing points.
You really need to know who actually made the particular model you are interested in. LS? Escort? Someone else? It matters!!!
That said, they have sold like hot cakes. Some of those FarmTrac models are LS tractors, some have Mitsu engine, and so forth. Some particular models are virtually the same as other, decal/tractors elsewhere. Some, I believe, were Escorts. For the price some have paid, I think they got outstanding deals. It all depends.
You'll need input from knowledgeable guys, not just fast talking sales people. Choose rightly and pay a low price and they can be a steal. Just remember, it is what it is. An '07 or '08 tractor. It is not a Kubota or Deere and won't resell like one either. Some models might be best to avoid as well. As I say, get some advice and be informed.
Post in the FarmTrac forum here and ask about your particular model of interest.