See this website:http://www.circuitspecialists.com/hantek-100mhz-digital-storage-oscilloscope-dso5102p.html
Too cheap, only 279US dollar 100MHz 2 Channel 1Gsa/s sample rate Digital Storage
What happen for Hantek?I think them 5000B is enough good, for this price, enough good on the current market.
It's the P version - this is the low-cost reduced memory model, You'll find it pretty cheap on ebay, too. The B version is better (though not perfect - it still suffers a selection of irritations common on these cheap scopes).