Well, you came to the right place .....
It is worth the price ($17/sample for regular + micros). For most folks that follow their fertilizer label the main help will be with the micronutrients. Just be sure to do proper sampling - lots of small samples, mixed up then sent in as 1 sample.
There are other labs, but they tend to be much more expensive and often time don't use testing methods compatible with all soil types. DO NOT TRUST THOSE THAT USE "NATURAL HOT WATER EXTRACTANTS" OR SIMILAR VOODOO.