Really need some help pls

[keely21]

First timer here and I'm so confused as to where I should get the eurostar to. I am staying in the val de europe area. I want to book eurostar now but unsure if I should get it to lille europe or gard du nord. There are 7 of us travelling so I want the cheapest option really. Eurostar to lille is working out around £150 cheaper but then how do I get to val de europe and is that likely to bump up the cost considerably? I've seen I can get a train from lille flandres quite cheap but how far is that from lille europe and what train do I get etc pls. It's all so confusing. Am I better going to gard du nord even if it's more expensive or will it work out cheaper in the long run? Anyone who's stayed in the val de europe area what did you do?