A German Manufacturer Lifted AOV by 67% with Smart Gift Offers

SunShare already sells high-ticket solar systems, so increasing average order value was not as simple as asking shoppers to add one more low-cost item.

At the same time, competitors had started offering free gifts too, making a basic giveaway more competitive. SunShare needed a smarter offer that could increase order value and still stand out from the competition.  

In this case study, I’ll break down how SunShare built its gift offers, why the product pairing worked, and how BOGOS handled the advanced logic without changing the brand’s custom product page.

TL;DR

• Basic free gift offers no longer stand out in a crowded market: SunShare needed more advanced gift logic to increase AOV and differentiate its promotion.
• Pair the triggered products with a gift that completes the purchase: shoppers unlocked a free cable only when they added both a Glory storage unit and a Ray solar panel, encouraging them to buy a more complete system.
• BOGO can feel more valuable than a 50% discount while protecting the price anchor: Instead of lowering the perceived value of the product, the offer gives shoppers an additional product for free.
• Auto-added gifts keep the product page clean: SunShare handled the promotion through cart logic instead of adding extra promotional widgets to its custom product page, keeping the original shopping flow intact.
• Together, these strategies helped increase AOV from €300 to €500, or roughly 67%: The result shows how more targeted gift logic can encourage larger purchases without relying on a basic sitewide promotion.

The Challenge: Grow an Already-High AOV When Normal Free Gift With Purchase Offers Are Everywhere

SunShare is a growing German brand selling balcony solar systems with a healthy AOV of €300.

Its main products include Ray solar panels, Glory storage units, and the cables that connect them.

The challenge was finding more advanced gift-with-purchase logic to push that number higher and gain a competitive edge in the crowded renewable energy market.

And the BOGOS app is the only promotion app that is compatible with this special requirement.

The Solution: Reward Shoppers For Building A Complete System

SunShare built its promotion around one main gift offer and supported it with a buy one get one free deal.

The idea was simple: make the reward more valuable by tying it to the right product combination.

#1. Unlock a free gift with a product quantity limit condition

Instead of attaching the free cable to one product, SunShare required shoppers to add at least one product from the Glory series and one from the Ray series.

Once both conditions were met, the free cable was automatically added to the cart. 

The free cable gives shoppers an extra reason to buy the solar panel and storage unit together as a complete system

This setup serves 3 main goals at the same time:

• Increase AOV by encouraging shoppers to add more by pairing products that naturally work together: Ray generates the power, Glory stores it, and the cable connects the two. The gift is now a clear reason to nudge customers toward meeting the condition.
• Keep profit margin healthy: at €29, the cable costs relatively little compared with the value of the full order, so SunShare can give away the cable as a valuable gift without hurting its margin.
• Encourage future purchases: once customers build a complete solar system and see that all work smoothly together, they have more reason to stay with the same brand for future needs. When they want a larger setup, extra panels, more storage, or a replacement for an old component, choosing SunShare is easier than searching for another vendor that may not fit the existing system.

#2. Buy One, Get The Same Free

SunShare also ran a commonly used gift-with-purchase offer that is commonly used by eCommerce stores: buy one Ray solar panel and get a second for free.

Giving the second panel as a gift adds strong purchase value without lowering the product’s full-price anchor

This works because solar panels naturally scale in quantity with the customer’s needs, so a free second panel is an easy yes that speeds up the purchase decision. 

Beyond helping conversion, the bigger advantage is how the offer protects brand value over time. Giving a panel as a gift and offering 50% off can cost a similar amount in margin, but shoppers perceive them very differently:

• A visible 50% discount lowers the price anchor: it can train shoppers to wait for sales and make the full price feel less justified over time.
• A free gift keeps the full-price anchor intact: shoppers still see the product at its original value, while the gift adds a strong reason to buy now.

The margin cost may be similar, but the free-gift framing adds value without making the core product look cheaper.

#3. Use Auto-added Gwp To Keep The Product Page Clean

SunShare’s product page already includes many sections and product options to help shoppers build the right system. Adding more promotional widgets could make the page feel crowded and harder to navigate.

That is why the team chose an auto-added gift-with-purchase instead of an offer that needs extra on-page blocks. 

The gift-with-purchase strategy keeps SunShare’s product page organized without adding too many offer widgets

With this setup, shoppers simply browse the store and add the products they want. Once the cart meets the required condition, the gift is automatically added to the cart, keeping the shopping flow smooth and uninterrupted.

The Results: Aov Increased By 67%

After running the strategy, SunShare’s average order value increased from €300 to €500, a lift of roughly 67%.

The result came from choosing a more advanced gift-with-purchase setup instead of a basic free gift you can find everywhere. By grouping products that functionally pair together, SunShare gave customers a clear reason to add more to their cart.

BOGOS: Free Gift Bundle Upsell played an important role in making that setup possible. The app supports the specific Product quantity limit condition SunShare needed:

• Shoppers must add at least one product from one collection and another product from a different collection before a selected gift is automatically added to the cart.
• This level of logic goes beyond a standard gift tied to a single product or a single spending threshold. 

The setup was also backed by phenomenal support from the BOGOS support team. SunShare received detailed guidance on how to build the condition correctly, along with suggested workarounds to fit the promotion around its existing store setup and business needs.

Together, the advanced offer logic and close setup support helped SunShare launch a promotion that worked as intended and contributed to the AOV growth.

Offer Playbook For Other Brands

SunShare’s strategy can be reduced to a few practical rules that other stores can apply when building more advanced gift-with-purchase offers:

Conclusion

SunShare shows that growing AOV does not need to repeat old-school free-gift-with-purchase conditions. By tying a free gift to a specific product combination, the brand gave shoppers more reasons to build a complete solar system in one order.

The result was amazing, with an AOV increase of roughly 67%, while keeping the shopping experience seamless.

If you sell products that naturally work together as a system, set, or routine, you can apply the same approach. Start by identifying the product combination you want shoppers to buy together, then attach a useful gift that unlocks only when that combination is in the cart.