The flat-fee Rebuy alternative for Shopify bundles (2026)
BundleForge isn't available yet. It's in development and not on the Shopify App Store. This page describes how it's designed to compare with Rebuy; plans and prices may change before launch.
Rebuy Personalization Engine is a genuinely powerful platform — and for many stores, the wrong-shaped bill. Rebuy's pricing is indexed to your order volume: its public pricing page lists modular plans from as low as $25/month for one package and a Platform One bundle at $534/month, with both priced "based on orders per month." The better your store performs, the more you pay — a great BFCM doesn't just spike your revenue, it spikes your tooling invoice.
BundleForge takes the opposite pricing stance: $29, $79, or $199 per month, flat. No revenue share, no per-order fees, no usage meter. Your best sales month costs exactly the same as your slowest one.
What each product actually is
Be clear-eyed about scope — these are not feature-for-feature equivalents:
Rebuy is a full personalization suite. Cart upsells and cross-sells, checkout optimization, post-purchase offers, smart search, recommendation widgets across the storefront, A/B testing, and more. If you want one platform personalizing every surface of your store — and you're comfortable with a bill indexed to your order volume — Rebuy is a strong choice.
BundleForge does one thing deeply: bundle discovery. It runs deterministic market-basket analysis (support, confidence, lift) over your actual order history to find the product combinations your customers *already* buy together — then ranks each bundle by projected incremental margin, not just popularity, suggests a discount that stays profit-positive, and has AI write the bundle name plus PDP and cart copy. It does not do site search, checkout widgets, or post-purchase flows.
The pitch, honestly stated: for a large share of merchants, bundles and "frequently bought together" offers are the 20% of Rebuy they actually use. BundleForge gives you that 20% — done more rigorously on the data side — at a flat price.
Side by side
| BundleForge | Rebuy | |
|---|---|---|
| Pricing model | Flat monthly fee | Priced by monthly order volume |
| Plans | $29 / $79 / $199 per month | From ~$25/mo per module; Platform One $534/mo — both scale with orders |
| Bill after a record month | Unchanged | Higher |
| Bundle discovery | Core focus: market-basket mining on real orders (support/confidence/lift), margin-ranked | Rules + AI recommendations within a broader suite |
| Margin awareness | Every bundle scored by blended margin; discounts capped to stay profit-positive | Revenue-oriented recommendations |
| AI copywriting | Bundle names + PDP/cart copy, grounded in the mined data | Not the focus |
| Cart/checkout upsell widgets | — | ✓ |
| Post-purchase offers | — | ✓ |
| Site search / merchandising | — | ✓ |
| Data handling | Customer identifiers stripped at extraction; orders analyzed as anonymous SKU sets | Full personalization data platform |
| Best for | Data-driven bundles at a predictable cost | Whole-funnel personalization, volume-based pricing accepted |
The math that makes merchants switch
With volume-indexed pricing, the month your marketing finally works is the month your tooling bill jumps. BundleForge at $79/month is $79/month in February and $79/month during BFCM. If a flat-fee tool captures even most of the bundle-driven lift you were getting from a usage-priced suite, the spread widens every month you grow.
When Rebuy is still the right call
Honesty cuts both ways. Stay with (or choose) Rebuy if:
- You actively use its checkout, post-purchase, and smart search surfaces — BundleForge doesn't replace those.
- You want one vendor for all personalization rather than a focused tool.
- Your volume is modest enough that order-indexed pricing stays cheap in practice.
Choose BundleForge if bundles and cross-sell offers are the core of what you use personalization for, and you're done paying more every time your store grows.
How BundleForge finds bundles (the 60-second version)
1. Extract — order line-items only, customer identifiers stripped at the source. Each order becomes an anonymous set of SKUs.
2. Mine — deterministic market-basket analysis computes support, confidence, and lift for item pairs and triples; coincidental pairings are filtered out.
3. Rank by profit — bundles are scored by lift × blended margin × attach rate, so the top of the list is the money, not just the volume.
4. Price safely — suggested discounts give back at most half the blended margin (clamped 5–25%), so every bundle stays margin-positive.
5. Write the offer — AI generates the bundle name and PDP/cart copy from the finished numbers. It never picks items or changes the math.
Pricing (flat, always)
| Plan | Price | Includes |
|---|---|---|
| Starter | $29/mo flat | Up to 10 bundles/mo, market-basket mining, margin-aware ranking, AI copy |
| Growth | $79/mo flat | Up to 50 bundles/mo, tunable thresholds, safe discount suggestions, projected lift |
| Pro | $199/mo flat | Up to 500 bundles/mo, triple-item bundles, PDP + cart copy variants, priority support |
No revenue share. No per-order fees. No usage-based overages. Ever.
FAQ
Is there a flat-fee alternative to Rebuy for Shopify bundles?
Yes. BundleForge charges a flat $29, $79, or $199 per month. There's no revenue share, no per-order fee, and no usage meter — your best sales month costs exactly the same as your slowest one.
How much does Rebuy cost?
As of July 2026, Rebuy's public pricing page lists modular plans from as low as $25/month for one package and a Platform One bundle at $534/month — with both priced "based on orders per month," so the bill scales with your order volume. Confirm current figures on rebuyengine.com.
Does BundleForge do checkout upsells or post-purchase offers?
No. BundleForge does one thing deeply: bundle discovery from your real order history. It doesn't do site search, checkout widgets, or post-purchase flows — if you actively use those Rebuy surfaces, Rebuy still earns its keep.
How does BundleForge decide which bundles to suggest?
It runs deterministic market-basket analysis (support, confidence, lift) over your order history to find combinations customers already buy together, ranks each bundle by projected incremental margin rather than popularity, and caps suggested discounts so every bundle stays profit-positive. AI then writes the bundle name and copy from the finished numbers.
BundleForge is coming to the Shopify App Store. See how BundleForge works →
*Rebuy is a trademark of Rebuy, Inc., referenced for comparison only. Pricing reflects Rebuy's public pricing page as of July 2026 — confirm current figures on each vendor's site.*