It is true, you get what you pay for 
You have to consider that this is a $49 scope ( assembled ) and is by far the most affordable scope on the market.
The comparable Velleman scopes have approx. 2MHz bandwidth and sell for about $130 and up.
Neither the Jyetech nor the Velleman scope can compare to a $5,000 Tektronix, HP or Rigol scope.