Anyone can spend their money however they see fit.
Building double guns the right way costs money and it is often reflected in the price tag on the firearm.
Cutting corners on stuff like case colors, metal hardness, painting figure onto cheap wood stocks, and poor machining get you double guns that sell brand new for well under a $1000.
Before american sxs went extinct they cut costs. Look as the Savage model B's. They are ugly clubs, but at least they are reliable.
Who defines quality??? Well a guy that shoots his Kahn/Mossberg 10 shells a year doesn't have enough experience with his particular gun to make any sort of quality claims. Its apparent when holding one of these o/u's the lack of quality in craftsmanship. Even the CZ's when compared to a Browning or a Beretta or even a Fausti are lacking. They have some nice features and look ok from about 20 feet, but in your hand they have balsa wood stocks with wood figure painted on, painted on case colors or a silver reciever that has a finish like pot metal.
If you've got $800 to spend, spend it on a decent semi auto, or a used good quality sxs or o/u.
If you just love the romance of a sxs and can only afford a Huglu, and you think its right for you. By all means get it. I warn you though not to pick up a quality double that your buddy owns.
If you want to go cheaper, look into cheaper italian (fausti), spanish (lanber), or something japanese.