Pablo, my wife and I just got home from an Oregon coast road trip. Spent last Monday and Tuesday in Astoria. If I had known you may have been in the area, I would have loved to have met and said hi.
From there we worked our way down to Lincoln. But not before stopping at the Tillamook cheese factory for an ice cream cone. Their ice cream is so much better there, than their grocery store offerings. Stopped in Depoe Bay for a whale watching excursion, and then on down the coast.
As Pablo said, no rooms on the Oregon coast in the $100 price range. Even the 60+ year old motels are in the $140 or more, price range.