Banggood, Gearbest, Tomtop and a few others are like Aliexpress and eBay (buy it now mode) - they are an umbrella of many vendors that take a % of sales.
You shouldn't have a problem - I've bought through BG many times.
Unfortunately though, sometimes it can take a couple of months of you chose free shipping.
Other times, I've received my item in 2 weeks (China to Canada) with paid shipping.
BG offers shipping insurance - buy it for a little extra and pay with PayPal so you have 2 avenues you can pursue if you need to claim a refund.
BG has warehouses in China, Europe and the US.
I had originally ordered the Gecko white unit without a battery but I just ordered a black unit with battery and cables for $10 less on Aliexpress.
Hopefully, it will take 3 weeks like the 1st one.
Cheers,
Larry