I am going through the same thing right now. I am leaning towards selling out of my 2 positions and then transferring the $ to Zecco not because of the $ but because of at least the 30 days time frame.
I believe the fee to transfer is $50. Here is the e-mail I got from SB:
There is a fee charged by ShareBuilder for transferring assets to another brokerage. For full account transfers, the fee is $50. For partial transfers, the fee is $10 per security and $10 for cash funds, up to a maximum fee of $50. The amount of the fee must be available in your money market cash balance when the transfer request arrives from the other brokerage. Please be aware that an account transfer will take approximately 30 days to be completed.