Question: If you use LSI with Amazon, you also have to pay a shipping cost that you don't pay with CreateSpace when a customer buys one of your books from them?


Answer: The authors that I know who use CreateSpace and LSI at the same time usually use CreateSpace for their Amazon sales, and they don't enable EDC. Then they use LSI for any sales that are outside Amazon. 


Now, CreateSpace has some benefits, and so does LSI. But both companies charge almost the same for wholesale author's copies, although CS seems to be a little bit cheaper (by pennies). The shipping charges on the authors copies seems to be about the same between both companies, with LSI being a little cheaper. 


LSI tends to have a reputation for better print quality. 


Now, I have mentioned before that I think that when authors link to their CreateSpace store, it's a mistake. The CS link is terrible, non-searchable, and buyers have to pay for shipping. As you probably know, anything that costs over 25 bucks on Amazon gets free shipping, and customers really like that. 

That's all for now. I hope that answers your question.