This appears to be a price-mistake; Amazon is double-dipping on the Manfrotto 502HD Pro Video Head with Flat Base for $85.89 after a $50 mail-in rebate.

The regular price for this head is $185.89; there’s currently a $50 mail-in rebate (Amazon is an authorized dealer), but it looks like Amazon is mistakenly applying it as an instant-rebate. You should be eligible for the rebate after the Amazon $135 price, for a net price of $85. This is a steal at less than half price!

Note: Amazon is currently out-of-stock but they honor back-orders. They currently state a wait of 2-4 weeks, but knowing Amazon it is typically less than what they advertise.

[UPDATE: Amazon jacked the price up $50 to $185. I think this is them acknowledging it was a price mistake. 🙂 They seem to still be honoring any orders.]