It was my first purchase on killexams.com which turned to be good experience. But what i experienced, support is slow. They take several hours to respond. I passed my microsoft exam wilth 98%. Not total scam, they deliver the product and update also. If they improve the support, it will be best service on web.
Tip for consumers: site support is little slow but overall primary thing is the contents. exam files and contents are reliable.
Products used: microsoft DP-200 from killexams.com