Has anyone heard of a company called "Silicon Cycles"? They have a Facebook page and a website (Siliconcycles.net) and are advertising a flash sale of ebikes for $699 before shipping. Which is a decent deal for the specs. Just got an email from them offering a battery upgrade from 36v - 10ah to 36v-13ah. Have to buy "today". Can't find any info about them on the internet. No reviews, comments, anything. Google maps shows no sign of the company at either location listed on their website . I'd appreciate any feedback anyone has. Could be just a dropship operation or maybe a scam. Ever heard of them?