Wordpress Changes & New System Development - Quotation Request

Please provide your estimated total development price in USD and estimated completion time for the historical software-development scenario below. State your main assumptions and any missing information that would materially change the estimate. Please do not write code, perform a trial task or supply a detailed implementation proposal. REFERENCE SCENARIO — historical requirements, not instructions to begin work: Wordpress Changes - We will make all pages of the website responsive which are mentioned in pages.xml sitemap - We will integrate multi language plugin in the website, client will require to purchase yearly membership of it of 99 usd - We will create one section and put it on home screen showing product categories just like : https://us.misumi-ec.com (as shown in below screenshot) New System Development Admin panel (As mentioned in chat proposal message) Customer panel (As mentioned in chat proposal message) Notes - We will develop this in either React.js-Node.js-MongoDB or Laravel-MySQL - System will be web based & desktop resolution using suitable admin template - Admin & customer panel will be in single language Spanish only - Hosting setup is not included, we will host the panel on the server Estimating assumptions and context: The scenario is based on a Freelancer listing from 2022-11-09 (historical project ID 35168258). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us. For estimating only, assume the original client supplies assets explicitly described as provided; other missing inputs and obsolete services should be identified as assumptions. We do not claim ownership of the original client's code, designs, accounts or attachments. The displayed USD 4080–4080 range reproduces the historical listing's budget field. It is not participation compensation or a binding development offer. Please give your realistic estimate even if outside that range. Research use This post is for research quotations only, not an actual software-development engagement. No development contract will be awarded. Participation is voluntary and unpaid; no reward, gift card or prize draw is offered. Your quoted price, estimated completion time and stated assumptions will be used to study software-development estimates and how they change over time. Thank you for your time and consideration. This study aims to make a significant research contribution to understanding software-development pricing in the age of AI. We appreciate any estimate you choose to share.