it really depends on how you come across. if a white person is obviously from NY or a similar urban or bazaar-type setting (basically if they know what's goin on either in NY or with bargaining) they'll get offered the same price as the average asian customer, who it is assumed will haggle persistently.
but anyone who goes up and is obviously out of their element or has an accent from anywhere else in the country or europe, might get offered an initial higher price just to squeeze a few extra bucks if they aren't the haggling type. good bargaining is the equalizer, to take the price as low as possible or at least try and get some freebie trinkets or whatever.
"The last train out of any station will not be full of nice guys."
- Dr. Hunter S. Thompson
"I wash my face, then drink beer, then I weep.
Say a prayer and induce insincere self-abuse,
till I'm fast asleep"- In Trousers