You could do the same thing yourself and it would 3 to 4 times cheaper.

Example: You have $10,000 to invest
For their low end package, the fee is 0.35% per year. So you would pay $35 per year


But the funds they invest your money in have much lower fees:
Vanguard Total Index (VTI) - 0.07%
Vanguard Large Cap - 0.09%
Vanguard Mid Cap - 0.09%
Vanguard Small Cap - 0.09%
Vanguard Emerging market - 0.15%

Their bond funds are similarly low cost too.

Mix that up yourself, you would probably be looking at $10 per year in fees.


But I guess there is the convenience/usability factor.