Gauging Interest - Gratnell Trays to Sell/Exchange

Hi all - due to a comedy of errors our school has a surplus of the standard shallow Gratnell trays, and the prep room is drowning in them.

HOD and I are considering proposing to SLT that we sell them. If that's the case, is anyone in need of several hundred discounted Gratnell trays?

Thanks in advance!
We're in North East London...nearby?