Direct from an email from Ultrasabers.
$125 to add sound
$35 for Li-Ion setup ($45 if you want the upgraded charger)
$10 for Non-Illuminated AV switch (I think, I no longer have the email)
Add $15 for V4 sound
$85 for Recharge port with 1.2A fast charger.
I'm pretty sure there is a $50 disassemble fee as well. I got the quote from the live chat so I don't have it saved but I believe that is what it was. Then add on shipping...