Nothing fishy here you gotta pay 45 days prior, so just pay and wait for your car to arrive paying will save you from price hike last year they hike the price in Jan.... Rest assured you wont recived dec delivery as price is different there is 100k difference so you wont be getting delivery in Dec like other member suspect...
This is a tricky part of year just pay them to get car on time if you delay they will delay your delivery by a month or two...