Can some one Answer my question Plz

💙💙💗Desiree💗💙💙 • Mommy of 2 boys and 1 girl 👦👦👑👣🎀They are my everything
I want to purchase very early pregnancy STRIPS online that require 10 miu but im wondering which ones are best and are they really sensitive??? It will be my first time buying online which is better EBay or Amazon? I don't want to get screwed either and not receive anything