a bottle of 100 tabs at 10mg would only provide about two weeks worth due to the dosage requirements for males. that is, 60-80mg ED. Bio Tech has a good rep indeed but due to high cost, Anavar is frequently found to contain very little to no oxandrolone. Try it and see. Effects of good var should be noticeable with fat loss primarily in the mid-section (combined with proper diet and workout regiment obviously).
I understand you might be testing product from a new source. We all start somewhere. Hopefully the source has good reviews etc but even so, sometimes the only way to know for sure is to try the product yourself.