Caveat: I have not purchased from the linked sites.
I bought one of these to replace the 5" something blue one I have had for years. This is definitely a dramatic improvement. It is still not a 110v saw, but you shouldn't think it is. It is handy, and works well for an inexpensive battery powered saw. I've built my One+ collection off of used, open box, and refurbished deals. I have yet to be disappointed.