Anajet Sprint Fully Refurbished...For Parts?

I got my Sprint all gutted and refurbished in August and have the invoices, work details, etc (it was like $800), now it's being weird with basic functions, I don't want to buy ink to try prints if it's going to be screwy...I guess I'll just sell for parts? Business is busy and it's hard to put time to this when we have a good printer which is making us money. Asking $1000 (I am open, obviously) let me know questions, etc