Some have mentioned sending their samples to Universities that perform soil testing for the public, possibly out of state. Peaceful Valley Farm Supply offers an NPK test for $30, and a more complete test for $50.

Here is a link that might be useful: Peaceful Valley Farm Supply Complete Soil Analysis

Logan Labs in Ohio runs a complete 'standard' test for $20. I don't know, but I would assume places like Peaceful Valley are acting as a middle man and putting a mark-up on top of the actual cost. Many of the Universities - especially here in the midwest - are closely tied to chemical farming and their advice reflects that philosophy. After looking for alternatives, I found Logan. They use Dr. William Albrecht's base saturation methods.

For $100 you should get a test, analysis by an agronomist and a $50 Starbucks gift card. :)

Here is a link that might be useful: Logan Labs

"When the rain stops, I'm planning to do some of the manual tests that Kimmsr recommends to observe Tilth, drainage, etc. "

Stick with that, from what I have seen on some posts, kimmsr is a pro.

We farmed thousands of years knowing just basic plant nutrition.
Just make sure you add a wide veriety of composted fruits and veggies and little compost manure.

I checked the Oregon State Extension list and " A&L Western Laboratories " (link below) is listed as being headquartered in Modesto CA. The Logan Labs link given by fortyonenorth has a really good package, you will have to look at what is included in the tests and what you feel is necessary - the basic test from Logan would most closely resemble the S3C of A&L (which is more expensive at $35.)

I would pay a bit more for recommendations from whomever you choose.

Best of Luck!

This is the OSU PDF with soil testing labs listed:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/20037/em8677.pdf

Here is a link that might be useful: http://www.al-labs-west.com/index.html

Some of the state universities that do soil tests will test soils from other states (UCONN is one as I recall) and for much less then the commercial labs do.