I agree that there are a lot of entry level ARs that are VERY affordable right now.
I also feel that Walther PPQ and PPS is a tremendous value. I would not say under-priced, but people would buy them even if were $100 - $150 more. I think Walther can easily compare to H&K in quality (polymer to polymer).
I think Glock is a pretty good value as well. I guess they are priced like the equivalent of the Honda Accords they mimic in the gun world. Not too expensive, not too cheap, good quality and reliable, but no frills.