Hi Damo, the only suppliers I’m aware of are ExtrimTextil in Germany, Seattle Fabrics in the US, and Aliexpress in China. I didn’t like the fabrics from Seattle Fabrics (melting point of fabric too similar to melting point of coating), and the reviews of the fabrics on Aliexpress are pretty bad (the coatings easily delaminate). In your case the shipping costs from ExtrimTextil might not be worse than from North America, so it might be worth a try. I don’t know if that qualifies as “decently priced” though.
I’m working on an inflatable floor/seat design for a self-bailing option if that’s what you’re planning to make. Depending on how the next few months go I might have to start selling fabric in order to stay afloat.