I sort of agree with skin. Used to be they put a tool out and supported it for many years. I guess though that as fast as technology advances, it would be sort of hard to predict what is needed very far out in the future.
I also think manufacturers are playing games to keep ahead of any aftermarket industry, including the ones that make tools to fix them. For a company like SO that is all make all models, they are sort of trying to keep up with all of them.
I would think for your needs now, that is not a bad deal. Just know that when you upgrade vehicles, the tool may not support it.
I have always thought about all of the advances of each upgrade as you buy them for a scan tool. Not saying that they do not throw in some good ones, but many are sort of the in the field tech notes.
I do get the idea of updating wrong or non existing information. I would also say though that after a few years most of that is about as current as it will ever be. Not sure they are still updating information on the 06 camry, other than tech notes.
I do not get the OBD1 bidirectional controls. Not sure I have ever seen that feature on any scan tool, including factory ones. I would make sure that it has the connectors for OBD1. Many times the equipment might support it, but it does not come with connecters. I would be surprised any unit today would include very many connectors, that would be vehicle specific. Considering those vehicles are over 20 years old now.
If new in the box, there would be some kind of warranty on it. Maybe not support, but functionality.
At that price, it likely is as good as anything else you might find. Being able to make payments is a plus, unless you have the cash to buy outright. You may find something as good, but if you can afford to pay cash for it, you may be able to negotiate even better on the solus.