I suppose, as always, I will present a differing opinion. I think the mentioned coach would be a great way for you to get into the class A rental market. While there are differing opinions on the Alfa products you should visit one of the Alfa forums and you will you find some really strong Alfa supporters. Service is available. Parts are available. Similar specs are not available from most other manufacturers. I love many (not all) of the Alfa floor plans and I would have loved to have had an Alfa as an option when I was renting RV's prior to purchase.
Now, I can't tell if the ad is a fraud or reality and it is important that you understand that many RV's listed for sale on line are being listed by folks looking to take your money (even if it is only the $500 "required" deposit). Don't do it, don't do it for any reason on-line. You need to be able to see, inspect, test drive and verify ownership before you put forward a single dollar. My wife actually saw one of our friends RV's listed on line (all Prevost paint jobs are unique) and we called to see if they were selling. They were not but someone grabbed some pictures from the previous seller and listed it for sale. You just needed to send a deposit and they would deliver it to you!