Namecheap doesn't provide a CSV of all their current prices, and when you download your domains list as CSV, they don't give you the price that domain will renew at. They do have a pricing table at https://www.namecheap.com/domains/#pricing which running the following snippet will produce a string of CSV data that is the current pricing informat…

gistfile1.txt

const rows = document.querySelectorAll("#pricing tbody > tr");
let csv = "TLD,Register Price,Special Price,Renew Price,Special Renew Price\n";
for(let row of rows) {
  let tld = row.querySelector(".gb-tld-name").innerText;
  let newPrice = "",newPriceSpecial = "",renewPrice = "",renewPriceSpecial = "";
  let $NewPrice = row.querySelector("td:nth-child(2) > span:not(.gb-price--sale)");
  let $RenewPrice = row.querySelector("td:nth-child(3) > span:not(.gb-price--sale)");

  if ($NewPrice) {
    newPrice = $NewPrice.innerText.substr(1);
  } else {
    newPrice = row.querySelector("td:nth-child(2) > .gb-price--special .gb-text--through").innerText.substr(1);
    newPriceSpecial = row.querySelector("td:nth-child(2) > .gb-price--sale").innerText.substr(1);
  }

  if ($RenewPrice) {
    renewPrice = $RenewPrice.innerText.substr(1);
  } else {
    renewPrice = row.querySelector("td:nth-child(3) > .gb-price--special .gb-text--through").innerText.substr(1);
    renewPriceSpecial = row.querySelector("td:nth-child(3) > .gb-price--sale").innerText.substr(1);
  }
  
  csv += `${tld},${newPrice},${newPriceSpecial},${renewPrice},${renewPriceSpecial}\n`;
}