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Homemade plant-based milk: what does it really cost?

Guide & Budget July 2026 · 7 min read

Homemade Plant Milk: How much does it really cost?

We often hear that making your own plant milk is cheaper. But by how much exactly? We calculated the cost down to the cent for 4 types of plant milk, comparing them with the best commercial brands. The result is much more impressive than we expected.

Table of Contents

1. Cost per liter by milk type
2. Comparison with commercial cartons
3. Actual annual savings
4. How long does it take for the machine to pay for itself?
5. What to buy and where
6. Frequently asked questions

1. Cost per liter by milk type

The cost of homemade plant milk primarily depends on the price of the raw material (oats, almonds, cashews, soy). Here are the actual figures, calculated based on average prices in France in 2026:

🌾
Homemade Oat Milk
80g organic oats (~€0.24) + filtered water
€0.30/L
🌰
Homemade Almond Milk
100g almonds (~€0.48) + filtered water
€0.50/L
🥜
Homemade Cashew Milk
80g cashews (~€0.56) + filtered water
€0.60/L
🫘
Homemade Soy Milk
80g soybeans (~€0.18) + filtered water
€0.20/L
💡

Tip: Buy your raw materials in bulk or in large formats (1 to 5 kg) from specialized websites or organic stores. The price per kilo can drop by 20 to 40% compared to small packages in supermarkets.

2. Comparison with commercial cartons

To measure the real difference, here's a direct comparison with the best-selling brands in France:

Milk Type Homemade Luxibre Commercial brand Commercial price Savings / liter
Oat €0.30/L Oatly Original €2.50/L −€2.20/L
Almond €0.50/L Alpro Almond €2.30/L −€1.80/L
Cashew €0.60/L Average organic brand €3.00/L −€2.40/L
Soy €0.20/L Alpro Soy €1.80/L −€1.60/L

Regardless of the plant milk chosen, homemade is 4 to 8 times cheaper than commercial cartons—and without additives, added oil, or preservatives.

3. Actual annual savings

Let's look at the numbers that really make you think. For a household consuming 1 liter of plant milk per day:

€800
saved per year vs Oatly (oat milk)
€650
saved per year vs Alpro (almond milk)
×5
cheaper on average, all milks combined

Over 5 years, a household that switches to homemade plant milk saves between €3,000 and €4,500 depending on the milk chosen. That's the price of several vacations, or a complete kitchen setup.

Calculate your personalized savings

The Luxibre Complete Collection includes an interactive savings calculator to estimate your gains based on your actual consumption.

Discover the Complete Collection →

4. How long does it take for the machine to pay for itself?

This is the question everyone asks before investing in a plant milk maker. The answer depends on your consumption and the milk you're replacing:

⏱ Luxibre machine payback period (based on 1L/day)
🌾 Oat Milk
2 months
vs Oatly Original
🌰 Almond Milk
3 months
vs Alpro Almond
🥜 Cashew Milk
2 months
vs organic brand
🫘 Soy Milk
4 months
vs Alpro Soy

After amortization, each liter produced is a net gain. The Luxibre machine lasts for several years—the initial investment quickly becomes negligible compared to the accumulated savings.

5. What to buy and where to find ingredients

To make homemade plant milk, you only need one thing: the raw material. Here's where to find the best prices:

🌾 Rolled oats (for oat milk)

Choose fine rolled oats or whole oat groats. Average price: €2 to €4/kg in supermarkets, €1.50 to €2.50/kg in bulk or online. With 80g per liter, one kilo gives you 12 liters of milk.

🌰 Almonds (for almond milk)

Raw unpeeled almonds preferably. Average price: €8 to €12/kg in supermarkets, €6 to €9/kg in bulk. With 100g per liter, one kilo gives 10 liters.

🥜 Cashew nuts (for cashew milk)

Raw unsalted cashews. Average price: €12 to €18/kg. With 80g per liter, one kilo gives 12 liters. Cashew milk is the creamiest—ideal for coffees and sauces.

🫘 Soybeans (for soy milk)

Dry yellow soybeans. Average price: €3 to €5/kg. With 80g per liter, one kilo gives 12 liters. The cheapest of all homemade plant milks.

🛒

Where to buy? Organic stores (Biocoop, La Vie Claire), online bulk retailers (Greenweez, Kazidomi, iHerb), or supermarkets for oats. Avoid small packets in supermarkets—the price per kilo can be 2 to 3 times higher than in bulk.

6. Frequently asked questions

How much does a liter of homemade plant milk cost? +
Between €0.20 and €0.60 depending on the type: soy (~€0.20/L), oat (~€0.30/L), almond (~€0.50/L), cashew (~€0.60/L). That's 4 to 8 times cheaper than commercial cartons.
Is the Luxibre machine cost-effective? +
Yes, very quickly. For 1 liter per day, it pays for itself in 2 to 4 months depending on the milk replaced. Afterward, each liter produced represents a net saving of €1.60 to €2.40 compared to commercial brands.
Which homemade plant milk is the cheapest? +
Homemade soy milk is the cheapest (~€0.20/L), followed by oat milk (~€0.30/L). These are also the two milks nutritionally closest to cow's milk.
Do I need a machine to make homemade plant milk? +
No, but a machine like the Luxibre makes the process 10 times faster (2 minutes vs 15-20 minutes with a blender), more consistent, and simpler for daily use. It pays for itself in a few months thanks to the savings made.

✅ Key takeaways

  • ✓ Homemade plant milk costs 4 to 8 times less than commercial cartons
  • ✓ Annual savings: €600 to €900 for 1L/day depending on the milk chosen
  • ✓ The Luxibre machine pays for itself in just 2 to 4 months
  • ✓ Zero additives, zero added oil, zero preservatives
  • ✓ Ingredients available everywhere, in bulk for even more savings

Ready to make your first liters?

The Luxibre machine prepares 1 liter of fresh milk in 2 minutes. It pays for itself in a few weeks.

Discover the Luxibre machine →
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