What is the most important issue you should clear in case of ordering some kind of materials like grout for Ceramic?

instead of Quality ( for sure) procurement Officer should take considration to expiry date of Grout that what compatibale with time table of applying tiles works .

Various kinds of grout available in the market. Cheap price is not considerable always. You must concerned about quality. Ceramic required strong adhesive to stick. if you use poor quality for fixing it, then it will not last for a long period.  quality is more important rather than price. workmanship built company's goodwill in the market.