Hey there,
I know a online hobby store which sellls alot hobby supplies which is located in NJ. They have a store in NJ. Addres is 387 Piaget Ave (Rt.46) Clifton NJ. Dont know if thats near you. Anyways the website is
www.gundamshop.com
Its a gundam model website, but they do sell hobby supplies there, decent price and shipping is a flat 4.99. Alot of tamiya supplies, which most probably you will want to buy Tamiya Primer, havent test it yet, since i havent started a kit yet. But everyone recommends it and polish i do not know since i have used none.