Have an A3 flight booked ex-ATH for this week and just did OLCI. As UA *G you cannot select *any* seat during OLCI without paying. I was, of course, auto assigned a middle seat in the back. If I want to move to any window or aisle, even the last row, it costs 3 euros. Exit row costs 9 euros. Front of the bus costs 8 euros.

Contrast this with LO which I flew yesterday and I was able to select any seat in coach for free during OLCI, including exit rows.

-RM