http://www.stuff.co.nz/business/industries/87071149/spark-wa...
http://www.stuff.co.nz/business/industries/87071149/spark-wa...
I probably use around 5TB of data per month as well.
In Poland I ave 300/30 Mbit (they connected fiber to my house recently) for 50 PLN (it is about 19 NZD, or 13 USD) per month. They offer 600/60 in some cities (where there is more competition), but I don't know the price, I think is is more in 80PLN range. And plan to start also 1 gbit plan (probably with 100 Mbit uplink).
I use the G Suite Google Drive and get nearly full gbit while up and downloading.
Nope, 100% unlimited. Metered connections were a thing here 5 years ago, nowdays you generally get 80GB or so to start with and can upgrade to unlimited for a little extra. I pay $129 NZD ($91 USD~) per month for my unlimited almost-gigabit connection which is the most expensive residential tier available, and I can pick from any number of ISPs (there's like 5 major ones and plenty of tiny players) as the infrastructure is shared, unlike what you see in the U.S. with the cable companies.
The move to fiber (it ends on my box) was awesome.