Every trade on record
Who sold what, the condition and serial numbers, the payout, and the signature, ready to look up or reprint.
For independent LEGO®, game, electronics, record, and resale shops
Trade-ins at your counter, without the clipboard.
Free for one store. Take the item, pay cash or store credit, get a signature, and print the receipt. Your records stay in a Google Sheet you own.
No credit card. Works on any tablet, laptop, or phone.
Game VaultCounterSam R. · Staff
CustomerItemsSignPrint
Maria Delgado
(555) 214-0398
$46.75credit · expires Jan 14, 2027
Nintendo Switch OLED$110.00
LEGO® minifigures, lot of 12$22.00
DualSense controller, white$14.50
CashStore credit
Total · 3 items
$146.50
New balance
$193.25
$193.25
Continue to signature
Made for the shop floor
Credza runs beside your register on the tablet or laptop you already have. Nothing to install, and no new POS.
Keeps going when the Wi-Fi drops
Finished trades wait on the device and send themselves when the connection is back. Nothing is lost.
Works beside your register
Keep ringing up sales the way you do now. Any tablet, laptop, or phone with a modern browser runs the counter.
One PIN for staff, another for you
Staff unlock the counter with the Store PIN. Your settings, reports, and customer data stay behind the Owner PIN.
Signatures on the screen, not on paper
The customer signs on the tablet. The signature goes on the receipt and stays with the trade.
Seller ID when your city asks
Require ID by trade value, category, or cash payouts, and turn away under-age sellers.
A trade in four steps
The counter walks staff through the same order every time, so there’s nothing to remember mid-trade.
Customer
Look up by phone number or name, or add a new customer in seconds. Their credit balance shows right away.
Items
A sealed LEGO® set, a lot of minifigures, a console: add up to 100 items with condition, category, serial number, and the amount you’re paying.
Sign
The customer signs on screen. Choose a simple acknowledgement or full terms they scroll through.
Print
Print a receipt with the items, payout, balance, and signature, sized for 58 mm or 80 mm receipt paper or a regular page.
GAME VAULT
123 Main St · (555) 555-1234
TRADE-IN RECEIPT
Oct 16, 2026 4:12 PM#7F3A2C
Customer: Maria Delgado
Switch OLED · Good110.00
LEGO® minifigs ×12 · Good22.00
DualSense · Fair14.50
STORE CREDIT$146.50
Credit balance$193.25
Expires Jan 14, 2027
I confirm I own these items and accept the terms above.
Built behind a trade-in counter
Credza started behind the counter of a LEGO® resale shop, where we needed a simple, dependable way to take trade-ins and keep store credit straight. It’s built for that counter, and for every shop that buys secondhand.
Store credit brings them back
Credit can only be spent in your shop, so every trade-in is a reason to come back through the door. Credza keeps every balance straight: partial spends, the balance on every receipt, and an expiry window you choose, or none.
Also built in
Your data stays yours
On the free plan, everything lives in a Google Sheet in your own Google account. Credza never sees your customers.
Privacy tools built in
Export a customer’s data or remove them on request, while your trade records and totals stay intact.
Set up in about ten minutes
The free plan runs in your own Google account. You’ll need a Google account, a computer for the first two steps, and the device you’ll use at the counter.
- Copy the Credza Sheet into your Google Drive.
- Open Credza → Set up in the Sheet. It walks you through turning on its script.
- Scan the QR code it shows with your counter device, then create your Owner PIN and Store PIN.
Read the step-by-step setup guide
Set up this devicePricing
Free
$0 forever
One store, running in your Google account.
- Trade intake, signatures, and receipts
- Cash and store credit, with optional expiry
- Offline trade queue
- Seller ID checks, with age rules
- Summary report in the Owner Dashboard
Pro Coming soon
Monthly or annual, per account
For stores with staff, hosted by Credza.
- Everything in Free
- Regulatory reports, report exports, and ID photos
- Staff profiles with their own PINs and roles
- Reports, transaction history, and voids
- Email receipts and POS integration
- Offer suggestions and expected margin
- 14-day free trial
Enterprise
Custom pricing
For chains with several locations.
- Everything in Pro
- Multiple stores on one account
- Optionally share customers and store credit across locations
- Area managers and store comparison reports
Questions
Is the free plan really free?
Yes. It runs on Google Apps Script in your own Google account, so there’s nothing for us to charge for. Google’s free accounts allow about 20,000 backend requests a day.
Where is my data stored?
On the free plan, in a Google Sheet you own, signatures included. You can open, back up, or export it whenever you like.
Do I need new hardware?
No. The tablet, laptop, or phone you already have works, with any modern browser. A receipt printer is optional: you can print to any printer or skip printing.
Does it replace my register or POS?
No. Keep your register for sales. Credza handles trade-ins and store credit: when a customer spends credit, staff take it off their balance in Credza and apply it at the register.
Can I buy used LEGO® sets, minifigures, and bulk bricks?
Yes. Each goes in as an item with its condition, category, and the price you’re paying, and a tub of bulk bricks can be one item, like “Bulk bricks, 3 kg”. There’s no set-number price guide, so you price each item yourself.
What happens if the internet goes down?
You can keep taking trades. They’re saved on the device and sent automatically when the connection returns. Redeeming store credit needs a connection, so a balance can’t be spent twice.
Can I move to Pro later?
Yes. Pro will import your customers, balances, and trade history from your Google Sheet, so you start where you left off.
Does Credza make my store compliant with secondhand-dealer laws?
Credza captures the seller details most of those laws ask for, and on Pro it produces a regulatory report for inspections. Requirements vary by state and city, so check what applies to you.