I got an e-mail of some on-line sales. GREAT deals on designer stuff. Here's the e-mail: ONLINE SALES: Bon&Ging Sale What: L.A. design duo is peddling its well-tailored tops and jewelry at half price on the just-launched website. Why: These deals are tres bon. Where: Online at bonandging.com. Le Train Bleu Sale What: Amazing pieces by Lover, Vena Cava, and Cacharel are half off. Why: Time to get off your caboose. Where: Online at letrainbleu.com. Big Drop Sale What: Castle Starr and 3.1 Phillip Lim on the cheap. Why: Drop it like its hot. Where: Online at bigdropnyc.com. Mona Moore Sale What: Get 50 percent off shoes and handbags from Marni, Miu Miu, and Lanvin. Why: Accessories to thwart fashion crimes. Where: Online at monamoore.com. Otte Sale What: Half off the NYC boutiques stellar merch (think Trovata and Lauren Moffatt). Why: You Otte know. Where: Online at otteny.com.