It's true you get what you pay for, but I bought a Line 6 Spider 30 watter for £150, and I could have bought a Roland Cube or Vox AD30 or for a little more a Laney LC15! (It's my first ever electric guitar and amp so it sounded 'awesome' :D ) So I think the point is more that you can buy much better for the price of a Spider.
That said my Spider isn't that bad, I mean it makes my guitar louder, and it has a CD in and a headphone out, and its pretty versatile for practice at home. It is digital sounding, but it isn't the steaming mound of horse-radish everyone says it it.