How can I install Unreal engine on a PC with metered connection or completelly offline?

I need to get Unreal Engine 4 as soon as possible on my desktop PC, it is for a task that needs to be completed soon. However, the computer is on a metered connection and downloading it there would cost me about 3 pizzas worth of money.

I have a laptop which I can bring somewhere where there is WiFi. But I see that Unreal Engine only provides an online installer, judging from the fact that the installer has 40MB.

So how could I install Unreal on my laptop, then move it to this desktop PC? I don’t mind using some data if it needs to connect to the internet to verify my account, but I don’t want to download over 10GB over mobile data unless it’s absolutely necessary.