Men’s Journal aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. E-bikes are swiftly becoming one of the most popular ways to get around cities and college campuses, but popular models are starting to become much more expensive . Thankfully, Walmart has been rolling back prices on loads of e-bikes and even e-scooters all summer, and recently, a model that conveniently folds up received a massive near-$6...