Hi!
Very few in Europe use 80/20 Castor oil fuel (FAI) anymore!

Fuel is more expensive over here but as many of us use 10-15% all synthetic oil in our fuel and just 5% nitro , the price is not that high.
Price is around $35.00-40.00 for 5 liter containing 5% nitro and 15% Aerosave all synthetic oil.