Yes you can tell them you bought it for $2500 instead, and still pay a hefty $260 in taxes uvip etc. the tax used to be reasonable of 5% and now its 13%, the government get **** my *** some other way, plus like the rider above if its used the government has already milked that one bike 1/3 to half of its value depending on how many previous owners. The only thing is if you get insurance you will only get back the value of $2500 or what you paid tax on at the mto incase your bike gets stolen or accident.
if your bike is $5000 or more, then i'd say you bought it for $4000 etc, because then as the price goes higher you loose more then save in the long run incase something happens to bike, if under $5000 do as you please.
Also, recently read, Canada is the 6th richest country in the world right now, so yea buddy do what ya want! our government has enough money to make rap videos slicing 1000 dollar bills in the air.