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# Inspiration – Test whether a post‑add cross‑sell slide‑in increases attach rate and AOV

## Overview

**Goal:** Boost AOV by suggesting 1–2 relevant add‑ons immediately after an item is added to cart.  
**Build time:** 6–8 minutes.  
**Expected impact:** 8–18% lift in attach rate; 4–12% AOV increase.

## Hypothesis

Showing a timely, highly relevant cross‑sell right after add‑to‑cart leverages shopping momentum. A lightweight slide‑in with one‑click add reduces friction and improves attach rate without derailing the checkout flow.

## Assumptions

* **Timing:** Post‑add moments have high purchase intent and receptivity to complements.  
* **Relevance:** Curated, context‑aware add‑ons outperform generic “related items.”  
* **Cognitive Load:** Limit to 1–2 choices to avoid decision fatigue.  
* **UX Continuity:** Slide‑ins preserve context better than full modals or page redirects.

![Example visualization: Slide‑in cross‑sell with one‑click add](https://storage.crisp.chat/users/helpdesk/website/-/3/0/a/0/30a06a2316be0a00/image_3byknh.png =800x800)

## Setting up the experiment in Personizely (Widget)

Run a widget test with:
* Control: No post‑add cross‑sell (or legacy confirmation).  
* Variant: Slide‑in cross‑sell offering 1–2 add‑ons with one‑click add.

Use clear labels (e.g., “Frequently added with this”), show price and total impact, and include a small “No thanks” link. Cap to 1 impression per session.

For step‑by‑step creation, see: **Cross‑sell widget tutorial →** (Widget Creation Steps)

**Recommended configuration:**
* Trigger: Fires on Add to Cart event for selected SKUs.  
* Targeting: Exclude carts with ≥3 items; prioritize high‑margin/compatible add‑ons.  
* Goals: Purchase
* Layout: Vertical slide‑in with image, title, price, and 1‑click add button.  
* Frequency cap: 1 per session; suppress after converting or dismissal.

**Additional notes:**  
* Keep choices ≤2; preselect quantity = 1.  
* Avoid discounts initially to measure pure merchandising impact.  
* Ensure images are consistent and text wraps cleanly on mobile.  
* Respect inventory and prevent adding duplicates if already in cart.  

This widget test will reveal whether a post‑add slide‑in cross‑sell improves attach rate and AOV without harming progression to checkout.