So I got my report a little while ago, and was pleased to see a few links were already indexed. It has, thus far, been 11 days since I received the report, and although there hasn't been much serp movement, I can at least be glad that it's helping me diversify my link portfolio. In the 11 days, there are about 30 websites that have my "puzzle" on them, and of those 30, about 11 with my link. If it makes it to the 400+ like the OP suggests, I'm expecting at least a hundred links spread across various sites.
I wasn't expecting too much as the service is only $27, but nevertheless I would still recommend using this even if you only get 10-20 live links. Those links are on websites you likely would never have gotten otherwise.
Thanks again for the service.