Sounds right…buy organic. However in the world of shingles, organic is likely not what you think. Before redoing your roof know the difference between organic vs fibreglass shingles.
The ironically named organic shingles have a base mat that contain organic materials (e.g. wood, paper) that are soaked with asphalt to make them waterproof. Then a top coating of granules that stick to the adhesive asphalt. This is the shingle which has traditionally been used on homes. They use more asphalt & are heavier than fibreglass, come with a shorter warranty period and cost less. These are often called builder grade and used on new homes. Some organic shingles produced pre-1980 may contain asbestos, and in part was a reason for the development of fibreglass shingles.
Fibreglass shingles on the other hand use newer technology of a woven fibreglass mat, are covered with asphalt (and fillers to make it waterproof) and are embedded with ceramic granules. Fibreglass are lighter & thinner than organic, have a higher fire rating, cost more to install and come with a longer warranty.
You can not always determine if a shingle is organic or fibreglass without making a destructive investigation. As such, it will be important to ascertain certain information from, for example, the vendor concerning what type of shingles were installed and any remaining warranties / guarantees available to you when buying.
Asphalt shingles (traditional organic or fibreglass) are not intended for use on low / no sloped roofs.