My comment is based on TANSTAAFL. If you don't know, it means "there
ain't no such thing as a free lunch." In this case that means that if
2 HP DCs are typically priced in the $600 range then a 2 HP DC priced
at $200 is not the same. TANSTAAFL.

Well, yes and no. It is possible that either all the other 2hp are
overpriced, or that they incorporate some features that don't add value.

Before you say that doesn't happen, consider computers. About 10 years ago
the "good" brands were 50% more expensive than the "cheap" brands. But the
good brands were no better than the cheap brands, and people wised up and
stopped buying them. Compaq cut their prices to be competitive; IBM, HP, DG
and a bunch of others stuck with the premium price and had to exit the
business.

The same type of thing happens all over. Now, DCs might not be an example;
the HF one is probably junk like you say.