Where can I buy an orchard ladder in Portland, Oregon?

I got mine at Wilco Farm Store in Oregon City. They carry a good inventory with a variety of sizes. You could also talk to Stark Street Lawn and Garden; if they don't stock, they may order for you. Tallman Ladders are made in Hood River. On their web site they have a dealer finder application.

How tall of one are you looking for?

There's a guy in Oregon City selling used 14' aluminum Tallman's on Craig's list for something like $130. That's a great deal if you have to get into tall trees.

There's a used tool store on either Foster or Powell out several blocks from 82nd ave and I saw they had an 8' or 10' aluminum orchard ladder out front, maybe more inside.

I think I bought my 8' new from Stark Street after failing to find a used one.