Although written for Call of Cthulhu, this is a fantastic resource for any historical game set during the Victorian era (including the Wild West). I had spent a bit of time researching similar info for my own games but I'm thrilled that Chaosium has made this available -- It's so much more extensive and complete!
In addition to lists of items and prices theres also valuable info on the years certain things were invented. This makes it a good resource for world building and campaign design in general.
While it has a simple design and layout the book more than makes up for this in information and utility. If a book of "Victorian Era Equipment" for an RPG sounds like something you could use in your game - this will make you very happy.