I ended up with a bunch (3 pallets) of fruit/vegetable/produce retail packaging trays and was hoping there might be someone with an idea on where I could find a buyer, a forum or someone who does small scale farming etc ?

You weren't with that guy outside safeway today, trying to sell me generators and welders, were you?

Perhaps try a Farmer's Market? Puyallup, near you, runs through October, and then there are two in Tacoma...

I don't necessarily think the vendors will want them for there, but maybe could use them in other sales situations, or may have others they sell to that might could use them, and could give you some contacts...