https://www.reddit.com/r/typewriters/comments/1qej21g/bulk_ribbon_source/
We are a small typewriter shop based in the Netherlands.
Usually we would order bulk ribbon from USA and pay 100+ euro for shipping costs and duties. The shipping mostly cost us more than the product itself and made it much harder for us financially.
We would even combine orders with other local typewriter shops to cut the costs down.
So we now found an alternative. Make it ourselves.
After much testing we have found the perfect ink saturation. No bleeding. No oversaturation. Plus the ribbon should last 3-5 years when properly stored.
We are happy to now offer 320m cotton reels (black) for other typewriter enthusiasts and shops based in Europe (we do ship worldwide, it is just much more affordable to buy local).
A ribbon can make or break your typing. I really dislike light print or oversaturated ribbons. So zero compromise in quality.