RX 100 m3而家點買最平?

行貨仲做緊送$1000禮券+原廠電
而百記做緊恆生卡優惠,簽$5000送$250 CASH DOLLAR
最平果間問到$5090
即5090-250-1000=$3840

想問下星際D鋪最平做到幾錢?