Help me find some luxury (strange) product have rrazor and blade business model ? The more funny and controversy the better.

Me go first:

• Most printer: we all know ...
• Keurig: a coffee pod machine that use one-time pod. They once refuse to use third party pod with a chip.
• Juicero: a luxury juicer that squeeze juice from repack pod (which you can squeeze by hand). The machine will only work with pre-pack pod. You cannot make the machine work with your own food or vegetable.

You know any ? Any product, startup, dead or alive.