06/05/2026

Guide: Grow volume without margin loss before Summer Sales

About this guide

After Mother's Day, demand cools down in some categories, but competition doesn't. As a merchant, your focus shifts from "peak mode" to "profit mode." At the same time, some markets start early Summer Sales and everyone is already preparing for Amazon Prime Day (Jul 8–11), which raises expectations on pricing, delivery, and customer experience.

The risk in May is chasing volume with blunt discounts and training customers to wait for promos, which hurts margin and long-term value.

This guide will help you grow volume through value: higher baskets, smarter bundles, flexible payments (BNPL), loyalty loops, and automation. It also includes a quick compliance sprint so nothing blocks growth later (Withdrawal deadline and PPWR packaging readiness).

STEP 1: Measure & Diagnose

May is where many merchants decide "we need more orders." Without a margin view, you can end up selling the wrong products, over-discounting, or paying too much in acquisition.

If you don't measure contribution margin, promo impact, and basket structure now, Summer Sales and Prime Day will amplify the losses.

Use cases

  • Merchants planning Summer Sales / Prime Day promos and needing margin guardrails before scaling traffic.
  • Teams wanting to stay compliant (Omnibus) while running structured offers (packs, thresholds, shipping logic).
  • Merchants optimizing basket profitability (what to push, what to stop, and where discounts actually help).

Modules to activate

OMNIVERSE PRICING - EU OMNIBUS DIRECTIVE LAW COMPATIBLE
A pricing governance layer that keeps promotions structured and compliant. It helps avoid "panic pricing" and makes pricing changes auditable. This is useful before Summer Sales and Prime Day.

See the module

PRICE INCREMENTS, DISCOUNTS AND FIXED PRICES
Lets merchants define controlled pricing rules instead of ad-hoc discounts. Helpful to protect margin while still creating compelling offers.

See the module

SAME PRICE (PRODUCTS AND SHIPPING) AFTER VAT APPLIED
Helps keep pricing consistent and understandable across tax contexts, reducing friction at checkout without relying on discounts.

See the module

STEP 2: Increase AOV without discount addiction

When volume is the goal, you may try to "push more traffic." But the fastest way to scale without margin loss is to increase basket size: bundles, packs, and relevant add-ons.

If you ignore basket architecture, you'll need heavier promos to hit volume, which damages margin.

Use cases

  • Merchants increasing AOV with bundles/packs instead of blanket discounting.
  • Stores adding contextual cross-sell (cart + product pages) to grow basket value on existing traffic.
  • Merchants creating "value offers" (gift boxes, multi-buy, frequently bought together) that protect margin.

Modules to activate

CROSS SELLING PRO - UPSELL - SHOPPING CART & ALL PAGES
Creates context-aware upsells throughout the journey (cart, product pages, etc.) to grow basket value without cutting prices.

See the module

ADVANCED PACK - PACKS, BUNDLES, BATCHES, GIFT BOXES,…
Enables bundle logic beyond basic packs (gift boxes, multi-quantity logic). Perfect for "value offers" that feel premium instead of discounted.

See the module

PRODUCT BUNDLES PRO
Turns "buy more" into a guided experience: merchants can curate bundles that lift AOV while staying margin-safe.

See the module

STEP 3: Secure Experience & Performance

If you want volume without discounts, you must remove checkout friction: payment flexibility, reassurance, and compliance.

In May, there's also a compliance clock:

  • Withdrawal (Jun 19): last call to avoid legal friction in the buying flow.
  • PPWR packaging (Aug 12): starting the checklist now prevents last-minute chaos later.

Use cases

  • Merchants using BNPL / Pay Later (incl. PayPal) to lift AOV without increasing discount pressure.
  • Stores reducing checkout drop-off by adding payment flexibility and reassuring buyers at the point of decision.
  • Merchants doing a "last call" compliance sprint (Withdrawal Jun 19) to avoid legal friction during acquisition pushes.

Modules to activate

ALMA
Adds BNPL to let customers split payments, making higher baskets feel accessible without discount pressure.

See the module

PRESTASHOP CHECKOUT BUILT WITH PAYPAL
Offer card payments, PayPal, and express checkout in one module. It works well as the main payment layer when you want broad coverage and a familiar checkout flow. It supports AOV growth via Pay Later without discount pressure.

See the module

EU-COMPLIANT WITHDRAWAL BUTTON
A practical compliance module to reduce legal risk and avoid checkout/CS issues before the Jun 19 deadline.

See the module

STEP 4: Amplify Authority & Content

May is a perfect moment to build "repeatable demand": loyalty loops, lifecycle emails, and smart channel expansion. This reduces dependency on heavy promos when Summer Sales and Prime Day approach.

If you keep only "one-shot acquisition," margins get squeezed by ads and promo stacking.

Use cases

  • Merchants building a post-purchase and winback engine (email automation) to grow volume without constant promos.
  • Stores launching loyalty + referral loops to increase repeat purchases and protect margin.
  • Teams expanding to marketplaces to capture demand while keeping catalog and operations under control.

Modules to activate

ALL-IN-ONE REWARDS: LOYALTY REFERRAL AFFILIATION REVIEW
Creates a value-based retention engine (points, referral, advocacy) that increases repeat orders and protects margin better than constant discounts.

See the module

BREVO
Lifecycle and transactional messaging to automate post-purchase, replenishment, and winback flows, growing volume without discounting everything.

See the module

AMAZON MARKET PLACE
A channel lever for volume, especially when paired with margin control and bundle strategy so the marketplace doesn't dictate profitability.

See the module

Conclusion

May growth isn't about "discount harder." It's about selling smarter.

Protect margin by measuring first, then build value offers (bundles and cross-sell), remove friction with payment flexibility (BNPL/Pay Later), and lock in repeatable demand through automation and loyalty.

Finally, treat compliance as part of conversion: a tight Withdrawal last-call checklist and early PPWR packaging readiness reduce risk and keep the merchant in control.

Preparation beats improvisation — start now, and Summer Sales + Prime Day become opportunities, not margin traps.

SELL ONLINE WITH PRESTASHOP

Sell online on a fully customizable ecommerce platform, adapted to the growth of your business.

Every 2 weeks, get the best ecommerce tips and latest trends in your inbox.

By submitting this form, I agree to the data entered being used by PrestaShop S.A for sending newsletters and promotional offers. You can unsubscribe at any time by using the link in the emails sent to you. Learn more about managing your data and rights.