# Is there a discount if I buy two or three pens? Do the math - facts

Canonical page: https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math
Type: Lab article

## TL;DR

Only the Gansulin Pen is sold in 1, 2, 3 or 4 pen variants; divide the multi-pen variant price by the pen count and compare it with the single-pen price to

## Facts Index

| Fact ID | Category | Entity | Attribute | Value | Source | Evidence |
|---|---|---|---|---|---|---|
| there-discount-if-i-buy-two-three-pens-math:title | identity | Is there a discount if I buy two or three pens? Do the math | title | Is there a discount if I buy two or three pens? Do the math | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:published | identity | Is there a discount if I buy two or three pens? Do the math | published | 2026-10-19 | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:author | identity | Is there a discount if I buy two or three pens? Do the math | author | PreppinPeppers Editorial Team | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:topics | identity | Is there a discount if I buy two or three pens? Do the math | topics | answers, peptide faq, how-to | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:summary | content | Is there a discount if I buy two or three pens? Do the math | summary | Only the Gansulin Pen is sold in 1, 2, 3 or 4 pen variants; divide the multi-pen variant price by the pen count and compare it with the single-pen price to | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:section-1 | content | Is there a discount if I buy two or three pens? Do the math | section | What is a multi-pen option, and which pens have one? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:section-2 | content | Is there a discount if I buy two or three pens? Do the math | section | How do you check whether two or three pens really cost less per pen? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:section-3 | content | Is there a discount if I buy two or three pens? Do the math | section | What else does your bench need besides the pens? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:section-4 | content | Is there a discount if I buy two or three pens? Do the math | section | What does the research community get wrong about buying several pens? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math |
| there-discount-if-i-buy-two-three-pens-math:product-amber-3ml-cartridge | products | Is there a discount if I buy two or three pens? Do the math | references product | Amber 3 ml Glass Cartridges for Pens (10-Pack) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/products/amber-3ml-cartridge |
| there-discount-if-i-buy-two-three-pens-math:product-bacteriostatic-water-30ml | products | Is there a discount if I buy two or three pens? Do the math | references product | Bacteriostatic Water 30 ml Multi-Dose Vial (Pfizer Hospira, USP) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/products/bacteriostatic-water-30ml |
| there-discount-if-i-buy-two-three-pens-math:product-gansulin-metal-peptide-pen | products | Is there a discount if I buy two or three pens? Do the math | references product | Gansulin Pen · Reusable Click-Dial, 3 ml (1-60 Units) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/products/gansulin-metal-peptide-pen |
| there-discount-if-i-buy-two-three-pens-math:product-gansulin-3ml-cartridge | products | Is there a discount if I buy two or three pens? Do the math | references product | Gansulin-Compatible 3 ml Glass Cartridge for Pens (10-Pack) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/there-discount-if-i-buy-two-three-pens-math) | https://www.preppinpeppers.com/products/gansulin-3ml-cartridge |

## FAQ

### Is there a discount if I buy two or three pens?

Only the Gansulin Pen has 2, 3 and 4 pen variants. Divide each variant's price by its pen count and compare it with the 1-pen price to see the per-pen difference.

### Which pens come in multi-pen variants?

The Gansulin Pen is listed as 1, 2, 3 or 4 pens. The V1, V2 and V3 are sold one pen per listing.

### What pricing can I get on 10 pens?

Ask support for a quote. The listings show multi-pen variants up to 4 pens for the Gansulin Pen.

### Where are the bigger quantity savings?

Check cartridges. Amber 3 ml cartridges come in packs of 10, 100, 200 and 400, priced from $17.49 to $380.00. Divide each price by its count for the per-cartridge cost.

### Do pens come with cartridges and bacteriostatic water?

No, unless a kit says so. Pens exclude cartridges, pen needles and bacteriostatic water. We do not sell needles; the pens take universal 28G-33G screw-on needles.

### Can I buy a replacement spring or internal pen parts?

No. We do not sell replacement parts such as springs, plungers, O-rings or dials.

### How many units is 0.25 mg if I mix 5 mg with 2 ml?

For example, 5 mg / 2 ml = 2.5 mg/ml. Then 0.25 mg / 2.5 mg/ml = 0.1 ml, which is 10 units on a 300-unit, 3 ml cartridge scale (0.01 ml per unit).

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