Dear Sir, Thanks for your support to us. This is Eunice Yin from JLCPCB group. Here are several situations that make the price different. 2$ is for new customer, if you check the price on our website without logging in with yourt account, the price maybe 2$. And after you logging in, our system will check if you are a new customer or not, if you have placed order on our website before by the same address, the price will change to 4$. Hope this information can help with your quesiton. And for more information, you can visit our website on support system, there are more documents about the service introduction. Also if you have any problem with the order placed on our website, please contact with [support@jlcpcb.com](mailto:support@jlcpcb.com), there will be special JLCPCB team to solve your problem rapidly and effectively. Any other suggestion or feedback, just feel free to contact with me. Have an nice day! Eunice Yin JLCPCB Group