In my experience people will often offer $20 for anything worth up to $1000 and as little as $50, any less and they want it delivered for free.

The number of people who offered me $20 for my $1200 TV was staggering, and one woman wanted me to pay her to take my beanbag chairs.

Better to just accept the gifts for yourself and let them fire you. I imagine a juicy wrongful termination suit would be appropriate.