I had an inside cabin on Voyager, bid the minimum +$5 for an oceanview balcony ($550 total for two), bid was accepted today. At the time we booked, the balcony would have cost about $2,000 more (the inside room was a steal, and no single supplement so we booked two rooms since it would be the same price). Now we have the balcony (good location, midship) plus the extra inside cabin for who knows what... for about half the cost of what the balcony would have cost us at booking.