[Treborika]

A good domain name plays a major role on the e-commerce website as it helps in marketing and promotion of the business online.
It also earns the business credibility to potential customers

[darkidx]

Good domain name especially if its fit on what you are try to offer for other people will make it the game changer, because people will memorize it easier

[Mika]

Your second level domain should use the keywords related to the niche of your eCommerce site.This will help, you ramk faster.