I read here and other places online that after the 3 free months are up and you call them or they call you to subscribe, tell them you will subscribe only if you can have the $77 a year deal. Almost all people I have read that posted said they gave it to them...
please keep me posted if you can find the link i just got of the phone with xm they want 166.00 per year. thats 2 much money
Read the end of this thread... Mentions the 'deal price' http://priuschat.com/forums/gen-iii...-2010-prius-v-xm-installation.html#post864782