I know this is an unpopular opinion, but Amazon are an utterly loathesome company and should be completely avoided.
They don't stock anything you can't get elsewhere, the prices aren't as brilliant as a lot of people make out, they treat their staff like dirt and they dodge almost all their taxes. On top of that, they drive specialists and independents out of business, and make it very hard for manufacturers and suppliers to maintain decent profit margins.
Support actual model shops, or they'll disappear.