Correct me if I'm wrong, but from your initial post, I understood that what you need are top voice badges, not LinkedIn accounts.
You don't need to buy accounts, as I’ve explained to you, you just need to create a Gmail account, and with that same Gmail, create a LinkedIn account. It doesn't ask for ID verification; you only need to verify the account that is going to RECEIVE the badges, not the accounts from which you give likes.
You also don't need to buy any proxy. As I explained in my first comment, you can use data from your mobile, and when you want to change the IP, simply put it in airplane mode for a few seconds, and it will assign you a new IP. At least that's how it works with most ISPs. For example, I've noticed that Vodafone DOES NOT change the IP.
Gmail
I don't understand what you mean. Why do you want to buy LinkedIn accounts? As I've explained, you can create them yourself. Are you referring to accounts for giving likes or for receiving the top voice badges?
I'm lazy as fuck and I don't like dealing with people.