I have an Manfrotto 498RC2 Ball Head with two quick release plates I'd like to part with.
Although this is an older head it's designed to hold just over 17 lbs and is in fine condition and works very well. B&H no longer sells this head but these folks do and their ad gives all the details about it.
I also have five ( x 36 ex) rolls of outdated Kodak Professional 35mm 'Portra' black and white film that anyone can have if they want it for the cost to ship it.