You can find these kind of offers almost everywhere on the web. ‘Submit to 3500 search engines for $19.95′ ‘free submission to 500 directories’. The truth is, you won’t find 3500 or even 500 search engines worth submitting to. There are perhaps 20 that can generate worthwhile traffic, and a few more that may be relevant to your own particular niche. The rest are mostly thingly-disguised Free-for-All links pages, or other sites with poor quality.

Save money and learn how to do real search engine positioning. A good place to start is Danny Sullivan’s Search Engine Watch at Search Engine Watch

Also, you can find
Search Engine Submission Tips
Search Engine Listings