Upstart file-scanning services like av-check.com and virtest.com bank on the guarantee that they wont share your results with the anti-virus community. Both sites only accept payment via virtual currencies such as Webmoney and Fethard, services that appear to be popular with the online shadow economy. For $1 per file scanned (or a $40 monthly membership) av-Check.com will see if your file is detected by any of 22 products.”]
Source: https://krebsonsecurity.com/2009/12/virus-scanners-for-virus-authors/