you can find the bic pro + in pretty much any store that sells pens, i believe i paid around two and-a-half dollars for a pack of two of these pens. the pro + is a fairly thick pen, it sports a serious rubber grip that is more awkward than comfortable but it flairs near both ends of the pen, which i'm guessing they did to make it less likely to roll of a table or something... if not, and it was just a design decision... well i guess even a broken clock is right twice a day.
this pen is a retractable tip "clicky" pen with a 1 mm tip and is just loud enough to be annoying if you happen to be one of those people how compulsively click pens for no damned good reason...
the ink in this pen isn't all that dark, which makes it good for things like sketching guidelines, layering crosshatching to build up shadows and detail, what it is not good for is fine detail and filling in solid black as you can see in the examples i've posted here.
the pen doesn't flow all that consistently, its skids and stutters, the tip does have glide though (how this is i do not know.) and makes straight lines wobble pretty easily. it also has a tendency to get that build up of ink around the tip that leaves deposits at the beginning and end of pen strokes.
basically it's an unwieldy pen that works ok, is fairly cheap, and probably shouldn't have either "pro"nor "+" in its name. even writing with these pens makes for sloppy work unless you put more effort than you ought to in making the characters look like you aren't writing after a couple of glasses of whatever. would i buy these pens again? no, probably not.