The day after buying my RC for 5400 ...what was the lowest price I could get after calling 8-9 dealers ... a dealer calls back with a 4848.67 price in Bay Area. What a kick in the gut.....
Contact the dealer you purchased from, see if they'll help you out with your buyer's remorse? It's possible they may extend some future considerations your way that would help offset that $550 difference.
As much as I hate to say it...... $5400 OTD is still a REALLY good price! I got my 2016 for $5499 + tax & license, (no set-up charges)- I was happy to get out of there for less than $6,000. That was after calling every dealer in the state. Smaller displacement bikes have a lot less "wiggle room" on the price. I wouldn't worry about the $$$ and start enjoying your new toy!!!!