If you shop and are careful in your research then SSD`s are great. If
you want speed and some bragging rights.
Pay particular attention to (sustained) read\write and seek times. There are some standard 3.0 SATA drives that will out perform some SSD`s if you are not careful in comparing specs.
You are really the only one who can decide if the cost is justified.
I spent to much(?) for and 8Gig Transcend SSD for my old Dell lap top. I love it. The difference in overall performance from the original 5400 RPM drive to a 7200 RPM drive to the new SSD is like night and day.
I use it for only the most basic of things so I can get away with the minimal capacity. Have my tower to fall back on for heavy computing and storage.
I plan on basing my next Tower build around this SSD.
Of course if your motherboard does not have\support PCI-Ex4 then you can always go with a 3.0 SATA SSD.