If someone searches for a keyword on our website, we currently pull in Google's search results. We have done this using Google's standard search API with no real issues so far.
However, we noticed that a number of searches weren't going through. So it turns out, that Google is phasing out this API and pushing people to a different API:
https://code.google.com/apis/customsearch/v1/overview.html#Pricing
The new API is more limited than what we've worked with, and also costs a lot of money given our usage.
We've recently also looked into Yahoo! Boss:
http://developer.yahoo.com/search/boss/
Does anyone have any suggestions on other APIs or providers to use here?
As I mentioned, we're not looking for a freebie but maybe something with more competitive pricing. If you can share experience using Boss or Bing, that would be great too.
Just to make sure: I'm not looking for a software solution (e.g. Lucene and related, Elastic Search, etc.).
We went ahead and used Yahoo! Boss for now.
UPDATE: YAHOO BOSS SEARCH API will discontinue on March 31, 2016.