There are a few brokers like FXCM that give you free VPS if you trade a certain amount of lots per month. So I pay nothing and can even jump on my iPhone and check out my trades on the full charts ( not MT4 app) using a Remote Desktop app. Even better, I use a iPad which takes only 7 seconds to log in to the remote app.
The major issue is a slow internet connection combined with a laptop 4K screen is asking too much on some evenings when everybody and their cat are surfing the web around London open.