Was it a pre-order sale? Like I said, alot of companies now do pre-order bonuses to entice people to buy it from them earlier on rather then waiting. And then once it's near release they'll return the price back to MSRP (in this case the n900's MSRP is $650). Now if you pre-order the device at $559 or $569 and then they changed it to $649 then yeah that's more of a scam if it's not one of those "prices subject to change".