Not quite all time lows but the cheapest around at the moment.
COSRX Snail Mucin 96% Power Repairing Essence 100ml $13.65
The essence can be used by all skin types, it's very hydrating, soothing and strengthens the skin barrier, helps with scar healing etc. It is non-sticky and has a very pleasant texture. According to the man in the house, it doesn't tingle even when applied after shaving. You would use this after cleansing and drying your face, before moisturiser and sunscreen. It can be used AM and PM.
COSRX The Vitamin C 23 20ml $23.99
High-strength water-based vitamin C serum with 23% pure ascorbic acid - not for beginners - please start with something around 10% instead. Needs to be refrigerated because pure vitamin C oxidises really quickly with heat, air the light. CosRX recommends using soon after purchase, despite the printed expiry date which is usually 2 years away . I've used many vitamin C serums and this one has one of the nicest textures. Yes it's a small amount but that's deliberate because of how quickly vitamin C serums oxidise.
COSRX 6 Peptide Skin Booster 150ml $23.99
A lightweight hydrating serum that has 6 Peptides targeting 'skin elasticity, fine lines, pores, and radiance'. To be used as the first step after cleansing.
Not sure its worth rolling the dice by purchasing facial creams off Amazon when they comingle inventory.