Track what your graded slab inventory is worth
Every morning, WebRun opens Nerdslice, reads every graded slab in your case with its grading company and grade, refreshes each slab's market value, logs the day's movement to Google Sheets, and sends you a Telegram digest with your total inventory value and its biggest gainers and losers.
- No credit card
- Under $0.01 per run
- Cancel anytime
How do I automatically track the value of my graded comic and card inventory?
Every morning, WebRun opens Nerdslice, reads every graded slab in your case with its grading company and grade, and refreshes each slab's market value at that exact grade. It logs the day's movement and unrealized gain to Google Sheets and sends you a Telegram digest with your total case value and its biggest movers.
- Total case value is recalculated and reported every single morning
- Biggest gainers and losers surface in Telegram in seconds
- Unrealized gain per slab is tracked against its cost basis daily
Built for comic shop owners · graded card dealers · collectible retailers · consignment case managers
What does WebRun do on every run?
The exact actions WebRun takes, in order - in plain language, so you can adjust anything.
-
WebRun signs in and gets to work
Opens
nerdslice.comin a real browser with your saved login - no setup, no API keys. -
1
Nerdslice - read graded slab inventory
nerdslice.com How to Automate Nerdslice
WebRun opens Nerdslice to read graded slab inventory. - Open Nerdslice and pull the graded slab inventory, including comics and sealed graded cards
- For each slab, capture the title, grading company, numeric grade, and cost basis
- Read the current market value attached to each slab at its exact grade
- Flag slabs whose value moved more than your alert threshold since yesterday
Done when Every graded slab has a current market value, a cost basis, and a movement flag.
-
2
Google Sheets - log per-slab market value
google.com How to Automate Google Sheets
WebRun opens Google Sheets to log per-slab market value. - Open the Graded Slab Value sheet and record today's market value per slab
- Write each slab's cost basis, current value, unrealized gain, and percent change versus yesterday
- Subtotal the case value by grading company and by grade band
- Keep a rolling daily total so you can chart how the case value trends over time
Done when The sheet holds today's value, gain, and movement per slab plus a total case value.
-
3
Telegram - send the case value digest
telegram.org How to Automate Telegram
WebRun opens Telegram to send the case value digest. - Send a Telegram digest with your total graded case value and the day's overall change
- List the three biggest gainers and the three biggest losers by dollar movement
- Note any slab that crossed a round-number value threshold worth a second look
Done when You have a Telegram digest with the total case value and the day's biggest movers.
How is each run configured?
Secure by default
Connect once, stays signed in
WebRun signs in once and keeps each session in a persistent environment, so every run picks up right where it left off.
Every action is checked against this policy before it runs.
Questions, answered
Is the Telegram digest safe to auto-send?
Yes. The Telegram digest is an internal report to you alone, with no customer contact and no public post, so WebRun sends it automatically each morning without needing approval.
How does it value each slab at the right grade?
It reads each slab's grading company and numeric grade from Nerdslice and pulls the market value at that exact grade, so a 9.8 and a 9.6 of the same book are valued separately.
Can I see how the case value trends over time?
Yes. The Google Sheet keeps a rolling daily total alongside per-slab history, so you can chart how your total graded case value and individual slabs have moved across days and weeks.
Related templates
Put this on autopilot.
Turn it on in minutes - or have our team set it up for you.