Only thing I am going to say is that if you buy a box off of eBay, you run the risk of it not being factory sealed. Not sure how big of a risk it is, but it is still a risk. If you buy it here it will be factory sealed. No chance of tampering. I'm willing to pay a few extra dollars to ensure that.
fenstiNever buy boxes if they don't have a picture of it on the auction. By the time you actually receive your box from Massdrop, you can return the box for your money back. Seriously... Massdrop sometimes takes a whole month just to ship something...
fenstiHave you ever ordered off ebay before? I'm sorry, but unless you're ordering off of some brand new member with zero feedback there will be no risk, I promise you. If someone sends you an unsealed box ,you send it right back and you get a refund. But if you order from one of the many, MANY reputable dealers on eaby you will be completely fine.
DragaanActually sometimes returns are not accepted so make sure to really read all the descriptions and fine print. I have gotten scammed before but then again, I have also received items from very reputable sellers. Just read closely.