Choosing between specifications matters more than choosing between suppliers in the early stage of a purchase. In the Copper Peptides (GHK-CU) category the platform currently carries 40 listings across 38 distinct specifications. This table sets each commonly offered specification against the unit prices actually published for it, so you can see which differences are cosmetic and which change the cost.
Specification vs. published unit price
Specification
Listings
Lowest
Highest
GHK-CU50MG/100MG, 10 pairs/box
2
75
75
100mg per vial
2
3.5
3.5
50mg/vial & 100mg/vial, high purity
1
14
14
GHK-CU50, 10 pairs/box
1
5
5
100mg/vial (50mg also available)
1
10.8
10.8
Dr.KZLT 12 pairs/box set
1
49
49
GHK-CU100 sample
1
8
8
GHK-CU100 trial sample (FK-032)
1
7
7
GHK-CU50 trial sample (FK-031)
1
6
6
CU50 10-vial pack / 1-vial
1
4.5
4.5
CU50 10 vials/box; CU100 10 vials/box also available
1
47.5
47.5
GHK-CU 50mg (with 2.8ml solvent)
1
2.8
2.8
CU100 10-vial pack / 1-vial
1
4.5
4.5
CU100mg / CU50mg vials
1
6.8
6.8
Lyophilized powder, salon exclusive line
1
3.2
3.2
3ml/vial
1
5.9
5.9
CU50 / CU100, 10 pairs/box
1
6
6
GHK-CU 1 vial
1
3
3
CU50 / CU100 options
1
5
5
100mg & 50mg options
1
4.5
4.5
Prices are the published unit prices in US dollars for the listed specification. Where a specification appears with a wide range, the spread almost always reflects pack size, concentration or the unit of sale rather than a pure price difference — open the individual listings before drawing a conclusion.
What to check before you order
Confirm the unit. The same specification may be sold per vial, per box, per pair or per set. Convert every quotation to a single unit before comparing.
Fix the concentration or fill. Where a specification lists options (for example two fill weights), state in writing which one your order refers to — this is the single most common source of a shipment that technically matches the product name but not the purchase order.
Ask for the documentation. A certificate of analysis and test report tied to the lot number is what lets you verify conformance on arrival.
Sample a new specification. If you are moving to a specification you have not bought before, order a sample lot first; the cost is small relative to the risk of a production quantity that cannot be used.
Selection logic that generally holds
For a first order, the lowest price is rarely the correct basis for a decision. A mid-range specification from a supplier who can state a consistent fill weight, provide documentation and hold the specification over repeat orders is normally the lower-risk choice, and it usually turns out cheaper once rework, claims or a failed batch are priced in. Reserve the lowest-priced small-pack listings for trial quantities where you are buying specifically to evaluate, not to consume.