The C2 has been under $2500, so this isn't a great deal. I'm only posting it so you know that LG are trying to clear out old stock. Plus, it's (hopefully) a sign that better deals are on the way for C2 units.
FYI, a JB Hi-Fi salesman informed me that "A CS is a step-up from the C2". That assessment was obviously based on the ticket price, at the time. The C2 was $2995 and the CS was $3695.
LG and Samsung OLED prices seem to have shot back up a bit after recent sales in the last month or so. Wondering how long we'll have to wait to see those prices again. June EOFY sales?