Man, it must be a bad instrument if it is going for 8 dollars and even then it is disappointing people.
for me, it was because the walkthrough video sounded really good to me. When I opened it up to play it, it just felt so awkward to play. I think it's the kind of instrument that if you know how to work it, it sounds great, but if you don't, it's hard to get it to sound good. It's hard to describe really. It's like you have to learn new techniques just to be able to play it. Which is fine. I guess it's way easier than playing a real oboe, but most of us don't want to completely readjust our playing technique for each instrument.