Judging from all the other Milwaukee vises I found on google (not same model, but same maker) they appear to be imports. Especially the way the jaws are set.
That looks like a Wilton/York design with hidden slide. Not to say it's bad, but not the quality of Wilton. Looks like it may have a swivel base, which is nice.
If I needed a vise, 40-50 bucks would be ok.
Where is your location? Out here in SoCal you can get a 4/5" Wilton for that much if you look for a couple weeks.