Currently Samsung’s SSD 840 EVO series 250GB sells for about €150, while Amazon in the US is selling the same drive for $177.99. The 120GB version in EU sells for €89.90 while US shops sell it for $99.99. Samsung offers a 500 GB SSD for $339.99 and at Newegg Mushkin, OCZ and similar priced or slightly cheaper but for 480GB drives. Toshiba Q series are the cheapest in this category with $319.99. You can find them listed here.
These are not the fastest or the cheapest drives on the market, but they are some of the most affordable per gigabyte and they offer quite good performance. In addition, consumers simply trust the Samsung brand and many of them are buying Samsung drives thanks to brand recognition, putting a lot of pressure on the smaller players. Just as it happened with the RAM memory market, profit margins on SSD drives went so low that you need to sell huge quantities to support your business model.
This is simply not a viable option for smaller players.
Samsung has its own chip production, has its own notebooks to put your drives in and it apparently is doing well in the market. Event close competitors are confirming that Samsung puts a lot of price pressure on everyone else. It sort of helps if you have your own NAND chip fabs.