If that's the shipped price, I will take it.
You turn on your IMs by doing the following:
* Click the "PROFILE" button over your login name in the upper right of the screen
* Click the "Edit contact info" button on the lower left
* Check the boxes in there to turn IMs/emails on.
You should really have both on, if you are selling, based on the rules here.
Good luck, and let me know if you want to sell the BUIS to me. Thanks! Edited To Add: IM sent with address and requesting payment address info.
You can read and reply to the IM by clicking on the "Unread messages" link next to your user ID in the upper right of the screen when logged in.
I'll send an email too, just in case. Thanks!