Well that's quite a good price on the tyre switch then, although I would have got totally confuddled as to which one went where
What causes that sort of wear
That inner edge wear looks like it's rubbing on something.
Clive had very similar when an oversized tyre was rubbing on the inner arch.
Also looks like over-inflation with the centre of the tyre wearing.
A lot of people run the 195 on the front with no problem.