[surebet]

There is a retailer on the site who carries the Marushin 6mm version in black and chrome for 165$ shipped. However, to access him you need to get your AV status.

Before you jump from sticker shock, be aware that the situation in Canada is particular since we can't import willy nilly from abroad, there is a premium to pay on guns but in this case the markup is worst because of the low value of the item. On most higher end guns the markup falls below 100%, sometimes being near inline with American pricing.

There are a few threads around that breakdown the various reasons for this pricing around the forum.

As Drake noted, the good news is that Toronto has an absurd amount of verifiers so the process should be painless.

FYI pretty much any firearm in this form factor would be prohibited in Canada.

EDIT: A single error is not a big deal, just keep in mind that this community regards personal research very highly. There is a lot of content in here and it's almost reasonable to say we covered pretty much anything in the past. Best way to start out is to take a few hours to browse the stickied threads (the ones that are pinned to the top of the various forums) in the FAQ and Newbie Tank sections. Condense your questions and the stuff you don't get in an omnibus thread afterwards. Bonus points for making references to those threads to show you researched.

EDIT2: There is also a vibrant secondary market on here, where you could find used or new items from individuals. I'll be honest, derringers aren't the most common items but the good news is that when you find one it's probably not going to be very much used. Pricing should be lower than the above quote.