Parker PM20PRO that I'm also willing to let go for $500
(mine is black with abalone binding)
also have an RTZ Vibezilla (think Trower Bridge of Sighs)
and a Little Dipper which emulates vowel siblants kind of like a talk box does
They each are like new and cost over $250
I'll let them go for $100 each
If you want to buy the whole shebang we can talk turkey
I'll let you guys mull this over for a week before I post elsewhere