online/ via the internet/ on the internet

[magdalena]

I bought it online / through the internet / on the internet/ via the internet - which is the best? I use online but frankly, i am not sure which are acceptable which not. hepl

[mad1982]

I bought it online / through the internet / on the internet/ via the internet - which is the best? I use online but frankly, i am not sure which are acceptable which not. hepl

I bought it online.
I bought it on the Internet.

You access/send something via the Internet.

M.