Fountain Pen Hospital in NYC
That's the first place I thought of when NY was mentioned. It looks like they have a physical location, too, so you might even be able to go there to buy what you want.
Shipping to NY shouldn't be an issue, I think. The real question is probably whether a store has the items you want in stock. There are probably a lot of places you can check out -- for my own reference, I've bookmarked Anderson Pens, Bertram's Inkwell, Colorado Pen, Edison Pen Co., Fahrney's Pens, Fountain Pen Hospital, FP Revolution, Goulet Pen Company, iSellPens.com, Jet Pens, Newton Pens, Pen Boutique, Pen Chalet, and Peyton Street Pens, plus a few others. A major online seller such as Amazon might even have what you want. Try these, maybe web search for some others, and see what you can find. Good luck!
P.S. -- Sasha Royale, I like Goulet Pens, too, but the original poster said, "I need stores other than Goulet Pen company (they don't have it in stock)", so I guess that's not an option this time around.
Edited by Dronak, 01 August 2015 - 00:01.