Since they use UPS, in my case, was the worst that happened. Having to track an order that was supposedly left on my door, when I live in high rise was too much.
They ship USPS, great prices most sellers include shipping, great exchange policy, comparing prices with their sellers is a must, not always going cheaper is better.
Got battery and charged according to instructions on site. Only runs for about an hour before we have to recharge. Five days old. Fast shipping not what I expected for the price.