solvents, fuels, or medication. Electrical and electronic products designed for the North American market may have to be converted to run on EU voltage and TV systems, annulling any benefit in reduced prices. Other products may also differ in specification, or they may not come with the same warranties or guarantees, making returning faulty goods difficult, or at least not cost effective. Furthermore, products for sale in the European Union should carry the CE mark for safety, but products purchased in the United States or designed for the US market are often supplied with other safety designations such as the UL listing. Internet delivery Products and services delivered over the Internet do not face physical barriers for shipping the goods, so one might expect Internet-based markets to normalize across free trading countries. Apple's iTunes Store formerly operated a model in which purchases can only be made in a domain where the users' means of payment is registered. UK customers were therefore tied to the offerings in the UK iTunes Store, proving a disadvantage both in price and selection. On 9 January 2008, however, Apple conceded that this was unfair practice and promised to harmonise prices with Europe within six months, citing record labels' wholesale music prices as the reason. See also Regional lockout VAT-free imports from the Channel Islands Australia Tax: An identical observation by those in Australia, where goods sold in Australia cost much higher amounts that the same goods sold across Asia and the United States, even for items such as computer software which is sold via digital distribution. References External links 1990s neologisms Economy of the United Kingdom English phrases