You can pick up
Galaxy S8 Case, Caseology [Parallax Series] Geometric Slim Fit Dual Layer Drop Protection [Burgundy] [Modern Grip] for Samsung Galaxy S8 and other Caseology Smartphone Cases from $3.99 after corresponding promotion codes below. Shipping is free when you buy direct from Caseology (without fulfillment by Amazon).
Galaxy S8
Parallax (Burgundy) $4.99 w/ code MPY9EI97
Parallax (Black) $4.99 w/ code W6DR85YV
Coastline (Frost Gray) $4.99 w/ code 443T7EYP
Coastline (Orchid Gray) $4.99 w/ code Q6957C7W
Legion (Gunmetal) $4.99 w/ code 2B2QT5AP
Legion (Orchid Gray) $4.99 w/ code 746UNY9T
Fairmont (Cherry Oak) $4.99 w/ code 7JDQMJYP
Vault I (Black) $3.99 w/ code LM8EFHKN
Vault II (Black) $3.99 w/ code HIOAKE2K
Galaxy S8 Plus
Parallax (Burgundy) $4.99 w/ code WHXXWVUC
Parallax (Black) $4.99 w/ code W282WRJG
Coastline (Frost Gray) $4.99 w/ code YRK9V97C
Coastline (Orchid Gray) $4.99 w/ code EOFCWUDC
Legion (Gunmetal) $4.99 w/ code OK8NBXYQ
Legion (Orchid Gray) $4.99 w/ code ECKI7TWV
Fairmont (Cherry Oak) $4.99 w/ code EW3KR9ED
Vault I (Black) $3.99 w/ code 5HGI2S8B
Vault II (Black) $3.99 w/ code 5EQAFC5R
iPhone 7
Coastline (Pink) $4.99 w/ code K9TYU3B8
Skyline (Rose Gold) $4.99 w/ code FTGOW9XM
iPhone 7 Plus
Coastline (Pink) $4.99 w/ code SKSV5FK9
Wavelength (Burgundy) $4.99 w/ code HY9DSKDM
iPhone 6S
Parallax (Burgundy) $4.99 w/ code NPK5UVOJ
Legion (Gunmetal) $4.99 w/ code FXK7Z756
Vault (Matte Black) $3.99 w/ code PGXIVBQL
iPhone 6S Plus
Vault (Matte Black) $3.99 w/ code P94PF74U
Galaxy S7
Parallax (Black) $4.99 w/ code VWLFPERW
Wavelength (Navy Blue) $4.99 w/ code EYUSE8KV
Galaxy S7 Edge
Parallax (Black) $4.99 w/ code ML59UBBW
Skyline (Blue Coral) $4.99 w/ code JLRO6AZR
Wavelength (Mint Green) $4.99 w/ code ILYBWIBR
LG G6
Parallax (Black) $4.99 w/ code 953LYWTE
Vault (Black) $3.99 w/ code RYL5BBXK
Bluetooth Wireless Headphones
V8 Bluetooth 4.1 Wireless In-ear Headphone (Black)
$10.99 w/ code GNDTVBAJ
HV806 Bluetooth 4.1 Wireless In-ear Headphone (Black)
$10.99 w/ code LE8XC5X2