Sealy posturepedic mattress and boxspring

The bed is an SMB 2017 model. My brother purchased the bed and used it for less than 2 weeks because he passed away (not on the bed). I brought the bed to Fresno but no one has used it and I really need the space. I guess I thought keeping it would have made my brother happy, but not if it's not being used. He paid $1,200 for the bed. Because it is practically new, I would like at least $400 for it, but I'll take your best offer. The top of the mattress sits at 32 inches high, it's a high bed and very very sturdy. The bed is in excellent condition, unused.