Galaxy S7 & S7 Edge are one of the best deals for this Black Friday/Cyber Monday 2017 as prices have gotten very low. You can easily pick up a used S7 for around $200!
If you want a brand, new Galaxy S7 or S7 Edge, I recommend the international dual-SIM model as the price is the lowest plus it is 100% unlocked and unlocked bootloader for rooting.
See full review here:
Make sure to grab the S7 with model number of SM-G930F or SM-G930FD(dual SIM) or S7 Edge with model number of SM-G935F or SM-G935FD(dual SIM). Also do make sure the seller has at least 98% rating/100+ reviews as sometimes scammers will try to sell you fake S7 or S7 Edge.
See Galaxy S7 on eBay – Link
See Galaxy S7 Edge on eBay – Link