lc-
This HVLP system (Rockler) appears to be the exact same one offered by Harbor Freight, usually between $69-$79. Sometimes on sale for $49.99, too.
Now before everyone scoffs at Harbor Freight - I must explain.
1) I sincerely doubt the HF, and possibly the Rockler system - would stand up to the scrutiny of commercial spraying application. But it works great for those of us "weekend woodshop warriors" now and then use.
2) I bought mine to see how HVLP works several years ago after stripping down and old china cabinet to refinish it. IT WORKED GREAT - very smooth finish, easy to control. I ran a cross a guy at the big ticket lumber store, and he had the same HF HVLP unit for 6 years, using it to spray finishes on pottery/ceramic at his store.
But it has to be the fact it was made in some foreign land, because no jar - glass or otherwise, would fit the threads on the gun!! So, clean up was a bit more complex, than having a spare cup for cleaner.
3) Homeower use - 1-2x a month maybe at the most - IMHO you can't go wrong.
However, for $20-40 more, you can get the Wagner system at HD or Lowes - depending on you needs, which would give you a better system, with some warranty after the first few months.
Good luck