Yeah 75% tax on tobacco that the store pays and then has to roll over onto the customer and that's not including the sales tax.
You're better off going to Jersey. Heck isn't SI part of Jersey? :rofl:
I don't know of any tobacconists in SI but in Manhattan you've got Nat Sherman and Barclayrex.
This is probably your closest one in jersey:
http://smokershavennj.com/metuchen/