don't overpay, just because there is a scarcity of 4 in one account doesn't mean you should overpay.
browsed through the previous few pages and looks like ~130 is the norm? im ok with paying a premium since its not just the scarcity of 4 nights, but also the repute of who im buying from.
this is for a stay in Tokyo in December so 550 probably won't get me very far if I book rack rates