Based on my research, it is difficult to accurately rank the affordability and environmental impact of these vegan butter substitutes as they can vary depending on factors such as location, brand, and production methods.

However, some general observations can be made. In terms of affordability, oils such as olive oil and canola oil are generally less expensive than other options such as nut and seed butters or avocado. Vegan margarine can also be an affordable option, with some own-brand products being cheaper than their dairy-based alternatives.

In terms of environmental impact, it is important to consider factors such as the production methods, transportation, and packaging of the product. For example, air-transported fruits and vegetables can create more greenhouse gas emissions per kilogram than poultry meat. It is also important to consider the source of the ingredients; for example, choosing organic products that do not use palm oil can be a more sustainable option.

I suggest that it is always a good idea to do your own research and make informed choices based on your personal values and priorities.
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