Hey Bernhard, I hate to point out the blindingly obvious but they are both made in the same place: India, so the difference in price is all down to delivery, storage and profit.
I would think about ordering all the parts in one go to reduce the delivery charges. A while back one of the the forum members did a very good restoration after ordering all the parts direct from India. (DEV Precision, I think). They were reasonable on price, quality and delivery charges. I have found Gary at DES in the USA to be honest, reasonably priced and helpful. I also use Rob at Old Timer Engines in Australia, he has a large stock of used parts that are very reasonably priced.
Do your own research, don`t trust what you read on forums or anywhere else.
Bob