MrUnconventional answered this already (thanks, Mr.!) but I also wanted to add that some people send a small amount of tokens to test it first, then send the rest.

Also, be sure to adjust the gas price on the lower right-hand corner of https://www.myetherwallet.com/ to fit your needs.

You can check the approximate cost and speed from http://ethgasstation.info

(For ETH transfers the gas used is usually 21000. However, tokens take up more space so are more expensive to send. The GOOD token uses about 56000 gas.)

Thanks, and please let us know should you have any other questions or concerns