I've noticed the same thing and have also noticed that women aren't liking the fatness of these pens. I'm trying to experiment with other reasonably priced kits...
The instant reaction of women has always been, it is too big and too heavy.
I sold hundreds, if not thousands to women who returned the next year to purchase more, once they became accustomed to writing with a bigger pen.
However, the path of least resistance is to show smaller pens---there are many new "two-piece" ballpoints--atrax, triton. Then there is the established Jr. Gent ballpoint. Or the comfort rendition of the slimline (although this has a cross refill, so I would not say it is an "easy" sale).
But, today you have several two piece, along with the one piece (sierra-style). Try them until you find the one that sells easily for you.
Ed