looking for suppliers at good prices, but not sacrificing quality

dear sir
i have been watching the south african online auctions, and find the seiko, citizen, timex, sector watches to be in demand ***** would like to know of a supplier that could supply me with good , original watches with warranties and guarantees and would honor this , should something go wrong with the ***** need to be reputable as a good suppier in south africa and the neighbouring countries, as i intend to start an online auction ***** you help me

regards