The term "commodity" is used here to describe something that is commonplace. It is neither special nor substandard - but something that performs adequately enough at an affordable price that it has been taken up by a great number of people.
This popularity attests to the item as being quite adequate for a great number of users which will cover a fairly significant range of usage. As such, such a unit represents a reasonable probability of meeting anyone's entry level needs, especially when that person is learning what it is in an item that will be important to them.
In a nutshell - if you don't know what you need in a scope, go with one that gets recommended. You aren't
really going to know what features you will need until you start using one.
Reselling something takes time and usually a loss especially when you turn something new into something used.
Don't even worry about this. Chances are you will want to hang onto it as a second scope. Even if you do sell it, be philosophical. It will have given you knowledge and experience - as has been said, consider any loss as the cost of education.
As for capabilities, you might be surprised at what you can do. It just takes time to learn and being challenged is a great way to hone your skills.
Here's an example:
Even if you work on RF, you are seldom interested in the carrier, you want to see the modulation.
Many years ago I had a RC toy that wasn't functioning - and it fell to me to troubleshoot. The first thing I wanted to check was the transmitter which operated at 27.xxxMHz. I only had a 15MHz scope, but I thought I should still get
something on the screen. So I set it up and, sure enough, I was able to see the signal. The carrier was just a shaded area, but the modulation (PPM) was clearly visible. Operating the controls showed the modulation change as expected.
Understanding what the specifications mean in practice is what counts. What's on paper is just a reference point.