I was given a large Amazon gift card by a very generous friend. I want to use it to buy an Apple Watch, but I'm really confused when looking on Amazon. Numerous callers Few list model numbers I'm looking for Series 2 38mm Silver Aluminum - simple band. Please help with advise. Many say "Sold by [insert company] and Fulfilled by Amazon" Is this considered an authorized reseller? Thanks, I'm very new to this.