Based on the information available, MechKeys appears to be a legitimate online store for mechanical keyboards. It has received a variety of reviews from customers. Some customers have praised the store for its great customer service and competitive pricing. Others have had a positive first-time buyer experience and have mentioned that they would purchase from them again. However, there have also been instances of poor after-sale support. Despite this, the company has shown a willingness to resolve issues and improve their service quality. It's always recommended to do thorough research and check multiple sources before making a purchase from any online store.