In Montreal you are getting girls that would cost at least $400 here, probably much more, for less than $200 USD with the exchange rate.
The problem is that it's a long drive to Montreal from nyc and when you add gas, tolls, and hotel room fees, it comes out much closer in price per session. Plus you have to make that long trip up there.
The money is comparable if you skip 3-4 sessions here, save up, and take a weekend trip to Montreal instead. I figure 1k is enough to pay for the transportation, hotel room (or better yet, airbnb) and 3-4 sessions there. I just always balk at the 5 hour drive each way. You'd probably want a like minded friend to come.
Also, make sure you read the reviews on merb.cc. While the website pics are usually very accurate, they dont show the face and the face does vary. Your best bet is to get girls that are reviewed highly for looks.
Last time I went there for a bachelor party, I got a good look at probably 10-12 girls. I would say 3-4 had plain faces and one had a sub average face. However, at least 3 of them were 9's and I would have given 2 of them 10's for face. They were flawless. All the girls were young...no older than like 25.