King Plank Mattress and Queen Tempurpedic Mattress, Office Chair

We just moved to portola valley and our new place is quite a lot smaller--we're needing to get rid of two mattresses in great condition:
King Plank Mattress (original $1900), used for 2 years, a large but slight surface stain at the corner, $300
Queen Tempurpedic Mattress (original 1500) used for 3 months, perfect condition, $200

These are great mattresses and wrapped up and ready for handling. You'd need to come pick them up yourself. I'd like to try to raise some money for charity from these--you can either donate on your end or send to me to donate. I'd prefer for the donations to go to humanitarian efforts in Palestine and Sudan.
The prices listed are what I think the value of the mattresses are and what a fair donation would be. If you need a mattress and can't afford to make a donation of this size, we can work something out.

I also have one of those meditation office chairs https://www.amazon.com/VIVO-Ergonomic-Adjustable-Meditation-CHAIR-CL02B-R/dp/B0D9C787HH/ref=asc_df_B0D9C787HH?tag=bingshoppinga-20&linkCode=df0&hvadid=80883015561309&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=86508&hvtargid=pla-4584482481281216&psc=1&msclkid=bcd45f0059a7102a05523671c1a42b32
Kind of like this^ but it's higher quality and white. I bought it for $350. It's too big for my little studio space now / would prefer a stool, so trying to downsize.