I have used no-one else but the this PROPER , LEGAL exchange shop for around 10 years , and can honestly say that I have always been treated with the utmost friendliness and respect , and have NEVER had any problems with transactions. The only way that there can ever be " different rates for different people " , is if one possesses a certain card which is available to anyone, it gives the guys in the exchange office the option to increase, LEGALLY , the rate, but only ever so slightly . It must also be pointed out that, under Turkish law, it is an extremely serious offence , punishable by imprisonment for both parties , to exchange money anywhere else apart from proper exchange offices, the small difference given by jewellers etc. certainly would not coax me nearer to a Turkish jail !!!!