The stork and menstrual cup

I mean I really don't see a big difference in the two. It's $80 for the stork and u can buy a reusable menstrual cup for around $15-$20 off of eBay. Basically the idea is to get the sperm as close to the cervix as possible and I can do that with my menstrual cup so why would you want to pay that much for something like that?