Why are the Inks so much more pricier? Inks are the premium line of switches under Gateron. The Ink housing versus milky housing.... everyone's experience is different, but I would say the Inks give off a thockier sound profile than the milky's. 
Main difference would definitely be how smooth it is as STOCK. Gateron does not specify what the housing material is, but I would believe the plastic (housing) has a lower co-efficient of friction because of how smooth the stroke is. 
These switches come lightly pre-lubed. You can lube over.
Red Inks V2

4mm Distance Travel
45g Actuation
5-pins
Lightly Factory-lubed
Linear

Yellow Inks V2

3.5mm Distance Travel
60g Actuation
5-pins
Lightly Factory-Lubed
Linear

Blue Inks V2

4mm Distance Travel
60g Actuation
5-pins
Lightly Factory-lubed
Clicky

Black Inks V2 (Community Favorite)

4mm Distance Travel
60g Actuation
5-pins
Lightly Factory-lubed
Linear

Black SILENT Inks V2

4mm Distance Travel
60g Actuation
5-pins
Stock
Silent Linear

Sound Tests by FilledTypes & Taeha Types

 

Silent Black Inks v2 Sound Test by Jaeyou

Here is a guide on how many switches you'll need for different keyboard sizes (The guide is a reference, but some keyboards market a certain layout even though they require a few more or fewer switches. Always order a few more if you're unsure):

120 - full size
92 - TKL
80 - 75%
70 - 65%
65 - 60%
45 - 40%

 
Selling in quantities of 1 & 10 per pack

- Inks are the premium line of switches under Gateron
- Inks have a thockier sound profile than milky switches
- Inks are smoother than other switches due to their housing material
- Available in Red, Yellow, Blue, Black, and Black Silent
- All switches are 5-pins and lightly factory-lubed
- Red Inks are linear with 4mm distance travel and 45g actuation
- Yellow Inks are linear with 3.5mm distance travel and 60g actuation
- Blue Inks are clicky with 4mm distance travel and 60g actuation
- Black Inks are linear with 4mm distance travel and 60g actuation (community favorite)
- Black Silent Inks are silent linear with 4mm distance travel and 60g actuation
- Sound tests available by FilledTypes, Taeha Types, and Jaeyou
- Available in quantities of 1 and 10 per pack
- Guide for number of switches needed for different keyboard sizes provided

Gateron INK V2 Switches

0% 0% 0% 0% 0% GATERON INK V2 Black Linear Switches $7.50 Default Title 10 PCS Per Pack Quantity 1 2 3 4 5 6 7 8 9 10+ 1 Quantity Add to Cart Buy now with PayPalBuy with More payment options GATERON INK V2 Black Linear Switches is backordered and will ship as soon as it is back in stock. SKU: ZT0930 by Gateron Group buy updates Chat with us Share Share on Facebook Share on Twitter Pin it Ink Black Linear 60 cN operating force 2.0 mm pre travel 4.0 mm total travel PCB mount 5pin MX stem 



- Ink: Black
- Linear: Yes
- Operating Force: 60 cN
- Pre Travel: 2.0 mm
- Total Travel: 4.0 mm
- Mount: PCB
- Connector: 5pinMX stem

GATERON INK V2 Black Linear Switches

0% 0% 0% 0% 0% GATERON INK V2 Silent Black Linear Switches $8.50 Default Title 10 PCS Per Pack Quantity 1 2 3 4 5 6 7 8 9 10+ 1 Quantity Add to Cart Buy now with PayPalBuy with More payment options GATERON INK V2 Silent Black Linear Switches is backordered and will ship as soon as it is back in stock. SKU: ZT1022 by Gateron Group buy updates Chat with us Share Share on Facebook Share on Twitter Pin it Silent black Ink Linear 60 cN operating force 2.0 mm pre travel 4.0 mm total travel PCB mount 5pin MX stem 



- Silent black InkLinear switch
- 60 cN operating force
- 2.0 mm pre travel
- 4.0 mm total travel
- PCB mount 5pinMX stem

GATERON INK V2 Silent Black Linear Switches

Type Linear Travel Distance 1.2mm Actuation 3.4mm Bottom Force 60g Operating 70g Bottom Mount PCB Spec SheetType Linear Travel Distance 1.2mm Actuation 3.4mm Bottom Force 50g Operating 60g Bottom Mount PCB Spec Sheet

GATERON INK SWITCHES

This is Gateron Switch Puller V2. They are made from aluminum giving them a great premium feel. The design is also pretty innovative and makes pulling out switches much easier. It also prevents damages to the switches or your plate by applying force in a specific manner, which you might not be able to do using a cheaper switch puller. Gateron V2 switch pullers will not scratch your PCB & Plates due to the soft plastic bottom.
Offering in 4 colors! Black, Red, Grey & Blue! 
Usage Demonstration:
vivaciousjan (Youtube)

- Gateron Switch Puller V2 is a premium switch puller made from aluminum.
- The design is innovative and makes pulling out switches easier.
- It prevents damages to switches or plates by applying force in a specific manner.
- Gateron V2 switch pullers will not scratch PCB & Plates due to the soft plastic bottom.
- Available in 4 colors: Black, Red, Grey & Blue. 
- A usage demonstration is available on vivaciousjan's Youtube channel.