Show IH: I built a DeepSeek SEO tool to kill monthly subscriptions ($19.99 Lifetime + Source Code)

Hi Indie Hackers! 👋

Like many of you, I'm suffering from "SaaS Subscription Fatigue". Every little Shopify app nowadays wants $10-$20/month just for being a basic API wrapper.

So, I spent this past weekend building a "scratch-your-own-itch" tool using the new DeepSeek V3 API to solve Shopify SEO product updates.

The Product:
It's a browser extension that bulk generates SEO Meta Titles & Descriptions for Shopify products directly in the admin panel.

The Tech Stack:

• AI Model: DeepSeek V3 via API (Reliable structured JSON & much cheaper than GPT-4o).
• Frontend: Vanilla JS + HTML/CSS.
• Database: None. Local Storage only (Privacy-first).

The Business Model:
Instead of another SaaS, I'm trying something different:

• Price: One-time payment of $19.99.
• Bonus: Includes full unencrypted Source Code. You buy it, you own it.

My Ask:
I'd really love feedback on this model. Is selling "software + source code" for a one-time fee a viable alternative to micro-SaaS in 2026?

Check it out here: https://changqing1.gumroad.com/l/deepseek-seo-pro

Thanks!