Unlocked Samsung Galaxy S8 and S8+ will be launched on May 31
Apparently, the only authorized locations to sell unlocked S8 units are Best Buy stores and Best Buy's website - in addition to Samsung's own US website. This explains why you may be seeing unlocked S8 and S8+ phones offered by other retailers at higher prices.
We have to note that you can only get the unlocked handsets in Midnight Black, and it's not clear if Samsung plans to offer other color variants anytime soon - thus, if you need an S8 in silver or gray, you will just have to purchase it from a carrier.
sources: Samsung, Best Buy (S8, S8+), Press release
So, do you plan to get yourself an unlocked Samsung Galaxy S8 or Galaxy S8+?
Things that are NOT allowed: