Four collector tools, free and private

Each tool is one page. Each explains itself without JavaScript and calculates with it. Your entries are saved in this browser only.

1. Chapter 1

   Grading cost calculator

   Fees and turnaround from the grader's own price list, with the date we read it. You add shipping and insurance.

2. Chapter 2

   Pack odds calculator

   Type in the stated pull odds and how many packs you open. It gives the chance of at least one hit and how many packs it takes to reach 50, 90 or 95 percent.

3. Chapter 3

   Collection ledger

   List comics, cards and figures with what you paid and what you think they are worth. Totals update as you go. Export and import as CSV.

4. Chapter 4

   Key issue lookup

   First appearances with the issue, the cover date and a link to the page that says so. No prices.

Storage is local to this browser and this device. Clearing site data erases it, so export the ledger before you do.