6 weeks into a pregnancy leaves you plenty of time to shop for the gender appropriate items needed.
No doubt some will abuse this for abortions, but those folks can get and would do it anyway, just at a later date.
I would venture that the overwhelming majority of users won't be of the abortion using types.
Actually they could get it at the same date by visiting a doctor for testing. And I very much doubt that this mail-order kit is very accurate. The only way to get a reliable genetic test at this stage is chorionic villi smapling, which is most certainly not something that can be done at home. If someone was really planning to abort based on gender, I’m sure they’d spring the extra bucks for a reliable test.