I had the same thing happen to me. I bought my 50mm 2.8 EX macro from them. They had it on sell and I had a coupon. So I was getting a real good deal. But they kept moving the shipping date back. After a few times they gave me an option to cancel the order. I did.
A few days later I got an email about a big sell they where having. Sure enough, they had the lens on sale again. My coupon was expiring that day, so I ordered it again. I had the lens the next week, with free shipping.
But the way Dell packed the lens really sucked. It looked like they just threw in some extra paper around the box. It had to bounce around. But it turned out ok.
Every lens i've gotten from B&H where packed very good. I don't know if I would order a high dollar lens or camera from Dell.