Razer SIlver and shipping costs

Hello, I have questions about Razer Silver. I got some answers on a previous thread, but I've got more.

• I wanted to know if shipping cost depends on which product I buy (even tho here in spain we have some kind of promotion where orders higher than 89€ are free shipping).
• Now talking more about Razer Silver if I redeem a product can I get free shipping? Keeping in mind that promotion.

I'll probably have more questions about it in a week (lol) but I think that's pretty much all for now.