Invert sugar has been available in the US for a pretty long time, you can get Lyle's Golden Syrup in most grocery stores. Simplicity Candi Syrup is another product that has been around for a while. That said, it's cool to see these other grades available here. I've used Lyle's in many of my English style ales over the years, but I can't honestly say that I've notice any real difference compared to normal table sugar. I am curious to see what these grades of invert are like. I use D-45 every now and then in non-Belgian styles for color and flavor, but these inverts might be more like what I'm looking for.
Now, Brewer's Caramel is an English product that I'd love to see available in the US. I sucked it up and paid for shipping to get some from a UK homebrew shop. I liked using it, but not enough to justify the extra cost.