Pay $199 and you may not be indexed by Yahoo. That sounds like bad deal. Anyway, if you sign up with ProBoost.com which does website optimization, their experts will personally analyse your site and submit it to search engines. Any problems you find with your submission, there is always live help (live chat and telephone) available. Besides Yahoo, they also submit your site to all major search engines and many other smaller one.
Little Mall - the cybermall that let you shop, bid and more
I think it's only worth it if you have plenty to spend on site promotion. I have only gotten one site directly listed in Yahoo. Others have shown up on their own over time, but this is the only one where I ever got "the e-mail" from them saying we were in. That took less than a week and was only recently. I think that it was because it fit well into one of their lowest categories. That seems to be key with them.