I recently installed some NewAge cabinets. As mentioned, they're available through Costco, but a number of online retailers carry them, and most offer "package deals". I got most of mine through GarageAppeal.com ... I called and they offered a deal where if I ordered at least 3K worth of cabinets based on the "ala carte" price, they'd give a 20% discount. Shipping was included, and with no tax for my state (FL) that worked out to be the best deal.
Everything arrived on pallets in pretty good shape. There were some flaws, but nothing really significant. Probably the biggest issue was with one of the tall cabinets, which had some misalignment with the doors. Upon inspection, it appeared the whole cabinet was slightly out of true. Rather than sending it back, however, I installed it, bolted the back of it it to the block wall (according to instructions), and then "trued" it up by tightening one of the front adjustable feet down against the floor. That seemed to do the trick.
To the wall mount question, the wall cabinets mount to the walls (obvious, I guess), but the tall and floor cabinets have adjustable feet. The tall cabinets fasten to the wall to prevent tipping, but still need the feet for support.
Attached are a couple of photos. There is some distortion in these photos (sorry!) making some angles look funky, but trust me that the cabinets line up properly and look good. These are the "pro" series 18-gauge cabinets in the "taupe" color.
Another minor note...most of these (except one tall cabinet) came with locks. I think those were from old stock, as I don't believe any of the NewAge cabinets currently have locks, except for the tool drawer cabinet. Based on a spot check, all of the keys work in all of the locks...so not much security there anyway.