I didn't get a rebate. I used the link that Tikerz posted, then crawled my way to the refurbed lapdock. It actually said that the item I selected wasn't elevible for a discount, and then gave it to me for $175. It was 184 with tax and free two-day shipping.
No rebates. No mail-ins. No anything special but walking thru the purchase process. I'm tempted to just buy 2 or 3 and post them on eBay, 'cause they sell for around $230 there.