Bay Photo (https://www.bayphoto.com/ https://www.bayphoto.com/) is where I go for sizes larger than I can print on my own. They've never let me down, and while

Bay Photo (https://www.bayphoto.com/ https://www.bayphoto.com/) is where I go for sizes larger than I can print on my own. They've never let me down, and while their prices are significant for larger formats, they're not out of line with what I've seen from other shops. Good, fast shipping, too. They do print on aluminum, similar to the described style - it's definitely not "dibond" in that there's no backing aluminum layer and by default (at least) no foamcore backing, but I've honestly never felt the lack. That said, when I hang prints, I hang them framed, so maybe it's a treatment designed for display on its own; when I do get aluminum prints from Bay Photo, they're generally one-offs of signs or other oddball stuff, so I don't really worry about fine-art presentation on those.