Yeah, I got the pro version as well. It is ok but your money is better spent buying LinkUp Pro. LinkUp does the same thing it does as far as the search engine submission process goes plus you can add as many search engines as you like. Web position Gold limits you to a certain amount.
The extra benifits like page rank and page checker don't really matter as much in this biz since you are using your 'Special Adult Webmaster Skills' to make sure you have those things under control. If you really need them the Shareware version should be enough.
Also Link Up is $100 cheaper than WPG Pro.
LinkUp Pro