I think the rest of this year and a good part of next year, you will see a consolidation of where SSDs are at.
The high performance SSDs such as those based on SandForce SF-2281 and also the Marvell based SDDs have it all their own way as far as performance is concerned, so they demand a price premium.
They won't have it all their own way for much longer, as there will soon be a Indilinx/OCZ and Samsung SATA 6Gbps solutions, and the big guns in storage (WD and Seagate) still haven't joined the party, but they will soon.
The problem at the moment is profit margins are being squeezed, NAND is still very expensive, so high performance SSDs. and large capacity SSDs will always have that price premium.
Also, if you think you have seen fast now (OCZ Vertex 3) then you ain't seen nothing yet. SATA 6Gbps is already saturated by the Vertex 3, and the days are now (at last) numbered for using the slow South Bridge (PCH) for high performance storage. SATA Express will start to appear late this year, and at last will be moved to the very much faster North Bridge.
When this happens you can expect to see SSD processors with many more channels to the NAND array, from the now common 8 channel controllers, and also NAND itself will reach 166MB/s per NAND die. Inside a year, you can expect to see 1GB/s read/write become the norm.
As for prices. Just remember one thing.
Developing these drives won't be cheap, so don't expect the prices to drop that much.