Lester Dominguez

Fullstack Software Engineer

[Lester Dominguez @LesterDominguez]

Most Shopify merchants think they win 50-60% of their chargebacks. The actual number, for stores without a proper evidence package, is closer to 20-35%.

Wrote up why most merchants are miscounting — and what the top quartile does differently:
https://t.co/nm1VPeWZLM

[Lester Dominguez @LesterDominguez]

Most chargeback content is about winning disputes. Preventing them is 10x cheaper.

New post: 12 tactics Shopify merchants can ship this week — across checkout, comms, support, and backend hygiene. https://t.co/Z4t5P4qjBD

[Lester Dominguez @LesterDominguez]

If you're looking for a Chargeflow alternative, this breakdown covers why merchants are switching and what to look for in a replacement.

https://t.co/wZ0sKTUe9Q

[Lester Dominguez @LesterDominguez]

Stripe just announced Smart Disputes — AI chargeback automation at 30% fee, no cap.

If you're on Shopify Payments, this doesn't apply to you. But it validates that automated dispute response is the future.

What it means for Shopify merchants:

https://t.co/Td0fKCvn7s

[Lester Dominguez @LesterDominguez]

Most "AI-powered" chargeback tools just generate text. Agentic AI is different — it perceives, reasons, and takes action autonomously.

Paidback detects disputes, collects evidence, filters harmful data, and submits responses. No human in the loop.

https://t.co/91nWKqh31m

[Lester Dominguez @LesterDominguez]

Paidback just went live on the Shopify App Store.

Automated chargeback recovery for Shopify merchants.
Evidence collected, AI response generated, submitted
automatically. You don't touch a thing.

15% only when we win, capped at $250.

https://t.co/w7LEXTVXU6

[Lester Dominguez @LesterDominguez]

A $200 chargeback doesn't cost you $200.

Lost revenue: $200
Lost product: $80
Chargeback fee: $15
Time responding: $100

Real cost: $395. Per dispute.

Most stores don't do this math until it's too late.

https://t.co/V8rInh7wbA

[Lester Dominguez @LesterDominguez]

Chargeflow charges 25% with no cap. Disputifier charges 20% capped at $250. Paidback charges 15% capped at $250.

On a $2,000 chargeback win:
Chargeflow: $500
Disputifier: $250
Paidback: $250

Same dispute. Different price. Full comparison: https://t.co/GoYZ9qX35t

[Lester Dominguez @LesterDominguez]

60-80% of ecommerce chargebacks are friendly fraud — the customer got the product and disputes anyway.

The good news? These are the most winnable disputes if you have the right evidence.

https://t.co/l8mL086C7s

[Lester Dominguez @LesterDominguez]

Customer says they never got it. Carrier says delivered. You respond and still lose. Why?

You probably submitted while it was still in transit instead of waiting for delivery proof.

https://t.co/Zp8FFX4xPU

[Lester Dominguez @LesterDominguez]

Visa 10.4 — "unauthorized transaction." Most common ecommerce chargeback.

Best evidence: AVS match, CVV match, IP near billing address.

Never submit: high fraud risk scores or IP from another country. You'd prove their case.

https://t.co/7qPFkUAb4T

[Lester Dominguez @LesterDominguez]

Running a Shopify store? You'll get a chargeback eventually. Most merchants lose because they submit the wrong evidence or miss the deadline.

I wrote a free guide: what to collect, how to write the rebuttal, when to fight vs accept.

https://t.co/qZaX7ef1gS

[Lester Dominguez @LesterDominguez]

@diegofmolina @Uber The valid until date is bad.

[Lester Dominguez @LesterDominguez]

Quote of the Day: "Believe and act as if it were impossible to fail." - Charles Kettering

[Lester Dominguez @LesterDominguez]

Quote of the Day: "There is nothing which we receive with so much reluctance as advice." - Joseph Addison

[Lester Dominguez @LesterDominguez]

Quote of the Day: "The art of being happy lies in the power of extracting happiness from common things." - Henry Ward Beecher

[Lester Dominguez @LesterDominguez]

Quote of the Day: "If youth knew; if age could." - Sigmund Freud

[Lester Dominguez @LesterDominguez]

Quote of the Day: "We must be willing to let go of the life we have planned, so as to have the life that is waiting for us." - E. M. Forster

[Lester Dominguez @LesterDominguez]

Quote of the Day: "The sweetest of all sounds is praise." - Xenophon

[Lester Dominguez @LesterDominguez]

Quote of the Day: "I think in terms of the day's resolutions, not the years'." - Henry Moore