How much does this cost to the nearest dollar?

G.Skill 4GB Ripjaws Series DDR4 Laptop Memory Model
Features 1.2V Low Voltage Support, Optimized Compatibility with 6th Gen Intel Core Processors Series Ripjaws DDR4 SO-DIMM, Memory Type DDR4, Form Factor SO-DIMM, Channel Config Single-channel, Capacity 4GB Tested Speed CAS Latency Voltage 1.20v, Heat Spreader No, Warranty Lifetime Brand G.SKILL, Series Ripjaws Series, Model Capacity 4GB, Type DDR4 SO-DIMM, Speed DDR4 2400 (PC4 Cas Latency 16, Timing Voltage 1.2V, ECC No, Buffered/Registered Unbuffered, Heat Spreader No RAM 4 GB DDR4, Memory Speed

Price is $19.00

Price: $18.53