If you can order the kits from the USA, have you looked into ordering the bulk chemicals from the US?

100 grams of Ferric ammonium citrate and 50 grams of Potassium ferricyanide will make about a liter (500ml of each) of cyanotype solution. Which would last you a long time. From Bostick and Sullivan, the 100grams of the FAC is US$8 and the P. ferricyanide is US$5.25 for 100grams. Of course it looks like shipping would cost more than the chemicals.

They also sell cyanotype kits -- the chemicals pre-measured in bottles one just adds water to. In 2x250ml ($25), 2x500 ($38), and 2x1000ml ($65) sizes.

But good luck in finding what you need!