Research

Cleansers 

1. Oil Cleanser: Innisfree Apple Juicy Cleansing Oil 5.07 Oz/150Ml by Innisfree $17.88
2. Foaming Cleanser: Cosrx Low Ph Good Morning Gel Cleanser 150ml $9.33

Toners

1. Hydrating: Kikumasamune Sake Skin Lotion High Moisture - 500ml ~$13
2. Purifying: [MIZON] AHA & BHA Daily Clean Toner 150ml (5.07 fl.oz.) ~$20 Heard it's been discontinued? Sadface.
3. [Benton] Snail Bee High Content Toner ~14 Guessing it will be a hydrating toner
4. Exfoilating: Pixi Glow Tonic ~15 at target for 3.4 fl oz

Essence/Serums/Ampoules

1.  BENTON Snail Bee High Content Essence $13.98
2. LJH Tea Tree 90 Essence
3. Cosrx Advanced Snail 96 Mucin Power Essence 100ml by Cosrx $16.05
4. MIZON Snail Repair Intensive Ampoule Cream, 1 Ounce by MIZON $12.24
5.  SCINIC Honey All In One Ampoule All Skin Types Women Whitening (250ml) $18.84 bought at $18.46 May 2016

Cream/Moisturizer

1. Joseon Beauty Moisture Whitening Anti-wrinkle Cream $23.20 discontinued on Amazon, but can find via Memebox
2. Korea Jaminkyung Crema Caracol Snail Cream/ Reduce Scars Acne Pimples $23.99
3. MIZON Snail Recovery Gel Cream 45ml (1.52 fl.oz.) Pack of 2 $9.69 bought at 9.59 May 2016
4. MIZON Black Snail All In One Cream, 2.40 Ounce Bought for $13.09 May 2016

Sleeping Packs
Ranked Wishlist:

1. TCFS Pumpkin Sleeping Pack ~$13 bought at $12 May 2016
2. Mizon Good Night White Sleeping Mask ~$9
3. Cosrx Ultimate Nourishing Rice Overnight Spa Mask ~$13
4. Goodal Anti-Wrinkle Want Night Sleep Cream Pack ~$33
5. Sulwhasoo Overnight Vitalizing Mask ~$43
6. Innisfree Green Tea Sleeping Pack ~$15
7. Holika Honey Blueberry Pack ~$13
8. Etude House Berry AHA Bright Peel Sleeping Pack ~$14
9. Mamode Rose Honey Sleeping Pack ~$20
10. Tony Moly Wonder Honey is actually a cream :S

Recommended by others but I HATE IT:

Missha Super Aqua Cell Renew Snail Sleeping Mask ~$14

Recommended by others with mix reviews, but I LOVE IT:

Laneige Water Sleeping Mask ~$20