Reddit reviews CoCo Ichibanya Curry House, beef curry (pack of four) (Original Version)

you can get real coco on amazon, but it's expensive (4 for over $30) and the packet is only 220g.

try S&B golden curry, it's widely available online, in some supermarkets, and definitely almost all asian markets... if you doctor it up (check youtube for some vids), it's a fairly suitable alternative - but be aware it does have msg

also check here for a scratch recipe