I bought a Lorex system directly form Lorex, not Costco. The package consisted of an 8-channel NVR and 4 2MP mini-bullet cameras with night vision. Later I bought a 4-pack of 3MP cameras for 8 total. Some people may argue quality, but I am 99% certain that all of the equipment I bought is re-branded DaHua so with Lorex at least, equal quality to DaHua. Just private firmware. Speaking of firmware, there is one thing that is lacking with Lorex, and that is firmware upgrades. There are none. The firmware in the NVR is dated 2 1/2 years ago and there are no updates. The cameras are also mid- to late 2015 and again, no updates.
All of the cameras came with 100' pre-made cables, and the weatherproof pieces for connecting outdoor Ethernet cables. The problem with using them though, is that you have to clip the connector off from the outside end, put the cable through it, and put a new connector on. That isn't a problem for me since I have the
tools and experience to do it.
I haven't heard anyone mention support. When I bought my Lorex equipment back in 2015, their technical support and customer service were pretty good. Somewhere down the line, they must have outsourced their customer service and it has turned into crap. In general, I hate CS anyway with the agents having to follow a specific script and no deviation. But I think the worst part is all of that condescending bullcrap they have to say to try and make you think they care. Just cut the crap and talk to me like a person. That is Lorex CS in spades. It is definitely offshore now, and everyone I have spoken to in CS speaks English with a strong India or Pakistan accent, but if you get off-script it seems like they don't quite comprehend what you are saying. If you can tolerate talking to someone that has specific lines to say, and then follows a script, you should be ok.
When they outsourced their CS, it caused some problems for their Tech support too. If you opened a ticket on the Lorex website it looked like no one ever even looked at it. If you called, you would get a message saying wait times are over 30 minutes, followed by if you would like a callback "do this". Well I would "do this" and never got a call back.
To be fair though, their tech support has improved quite a bit. I have had a couple of problems lately, and it has come down to replacing an NVR that was only a week or two away from warranty expiration, and just today got approval to have two cameras replaced that might be just passed expiration. They even provide shipping labels and pay the shipping costs. Kudos to Lorex for that. They respond to online tickets via email, and they seem to be knowledgeable. I have not tried calling them lately, but I hear that you can actually get through now.
So after all of this, the short answer is that the quality could be as good as other brands in the same range, but you should also consider support. Having someone local (meaning in the same country) could be a good thing.
Wayne
P.S. Speaking of the cables, man are they compacted. They are tightly wound and it took me two hours in the hottest sun I could get on a 100deg day to get them straight enough where I could pull them without kinking every 4 feet. The attached pic is a 30M (100-ish feet) cable with a 6 inch rule for scale.