I've been a member of the Dollar Shave Club for about 6 months now and it's been worth every dollar.
Aside from the amazing price, their products are actually great quality too. I find it almost hard to go through 4 blades in a month, but luckily you can set it up to only send new blades every other month. If you were thinking of trying it out, I suggest you do so. This also makes a great gift.
I'd like to hear someone else's thoughts or review on this product, please post below.