ここのだと安いけどなんか問題あるの？

https://www.tecobuyjp.com/ja_JP/huawei-nova-5t-8gb-128gb-dual-sim-mid-summer-purple.html?gclid=CjwKCAjwtqj2BRBYEiwAqfzur1KBqeZvmFPoKtpWyB4p8pc2wEQEqkQCxx7ObMWMhI7DD3w8YThrmxoCXSoQAvD_BwE