Hi,
Probably you are right.
But what answer do you expect?
1) Cost - and the save in cost - depends on volume, technology, country, materials, manufacturer...and so on.
2) Without knowing anything about your application... no one can say if there may arise a problem.
Currently you are the one with enough information to answer this. If you want us to give a good answer you need to provide useful informations about your application.
For sure you may complain that even this doesn't answer your questions.
*****
The other way round:
Let's assume one member gives these answers:
1) cost reduction is 3%
2) it will have no influence on your application.
My opinion on such answers is: Don't rely on them.
What happens when you later find out that one or both of these statements are wrong?
Klaus