i got the motul at cycle gear for $11.99 a quart.buy 3 get 1 free. better deal than 1 gallon for $42.99
I checked and last time I paid e56.99 for 4 liters; 1 liter would be even more.
Best price I found on the net was eur 44.95 per 4 ltrs / eur 11.25 a liter, shipping not included. I dare not make the conversion to us$.
Luckily my E5 hardly burns any oil between services.