In my opinion, in this field especially, unless it's a genuine offer by the makers or reputable source, you tend to get what you pay for.
I agree with the "anything under $100 is....." not very good.
Even if you don't think you'll want it for a long time - invest.
And you can certainly get a few 1,000 on a decent reader before you roam - more with the Sony 'cos of the card facility................
