Less Deal: Biggest online market supplier for Industrial Products only

Why Lessdeal: No one have time to visit every manufacturing companies or retailers store to buy every products. That’s why online market place websites given a place where you can get your required product easily just a single call. 

The competition of online market is too high in comparison of price, time delivery, quality and many other factor..
So I have question, what are the things matter you to buy such products??? We are trying always to solve this biggest question with our colleague or our group friend.  I just want you guys to support me on this question. 
Look forward