Don't buy anything before using the trial version

Eugene Zakhareyev wrote a post about a company which "specialize in development of Products/Tools for Microsoft Visual Studio Team System".
As it turns out, people who purchased the product received nothing, and currently it seems the company site disappeared.
Back when I was testing reporting tools I immediately ruled out any product for which there was no trial or demo version - it reflects badly on the company selling the product.

Update: The owner of the company claimed the site was down temporarily and that they never sold anything, as their product is still released as trial versions. I still would not buy anything before getting a fully functional trial version to approve.