Online stock does not indicate in-store stock - check with your local Reid store.
Continental Gatorskin for $25 Link
Continential GP 4000s II for $32 Link
It's definitely a good deal as Wiggle has Gatorskin for $40 Wiggle and GP 4000s II for $61 Wiggle
Wiggle does have a lowest price guarantee so try your luck by submitting a request to them to see if they can price beat, although it says out of stock so Wiggle may not price beat it..
If you are in Melbourne - use this deal for an extra $10 off!
I had some of the Conti Ultra Sport II 700x25c in my basket. Yesterday they were $29.99 each, today with 50% off they are $20. Although now out of stock, bloody typical.