We currently have Purse.io that as far as I know, provides the same service(buy on Amazon using bitcoin). Is there any department at all whereas you're service is better than Purse.io's?
I think your question isn't fair enough. I'll explain why?
This is the history of search engines....
Excite 1993
Yahoo! - 1994
WebCrawler 1994
Lycos 1994
Infoseek 1994
AltaVista 1995
Inktomi 1996
Ask Jeeves (now Ask) 1997
Google 1997
MSN Search (now Windows Live) 1998
Overture 1998
AllTheWeb 1999
Today's Internet, Google is the search king. But, it was born as the 9th search engine. With the service announcement of Google, 90's Internet user might be asked that
"Why do I use Google since I can find everything I need through Yahoo?" Internet isn't not anyone's property. Who's more creative, he's the winner!