ストア運営・広告最適化ガイド

収益性のあるストアの日々の運営 — リスティング最適化、PPC広告（Amazon/Shopee/Facebook）、レビュー、在庫、勝敗を決める指標。

Listing optimization (the foundation)

Before spending on ads, your listing must convert. A bad listing burns ad budget. Optimize these, in order of impact:

• Main image — 70% of click decision. White background, product fills 85%, sharp. Test 2-3 variants.
• Title — front-load the keyword + key benefit. Amazon: ≤200 chars, readable.
• Bullet points — benefit first, then spec. "Stay dry in heavy rain" beats "waterproof material".
• A+ content / description — story + comparison + use cases. Lifts conversion 5-15%.
• Reviews — the #1 conversion factor. Get to 15+ reviews (4★+) before scaling ads.

PPC ads — the 3 platforms

Amazon PPC strategy

1. Auto campaign first — let Amazon find converting keywords for 2 weeks. Harvest the winners.
2. Move winners to Exact — lower bid, higher relevance. This is your profit engine.
3. Negative keywords — block terms that click but don't buy (e.g. "cheap", "free"). Cuts wasted spend 20-30%.
4. Bid by placement — Top of Search often converts best; raise bid modifier 20-50% there.

Reviews — the growth lever

• Amazon Vine — official early-review program for new products (fee, but legitimate).
• Insert cards — a polite card in the box offering support / warranty registration. Don't offer incentives for reviews (bannable).
• Respond to all — especially negatives. Future buyers read your response, not just the complaint.
• Target 4.3★+ — below 4.0, conversion drops 50%+; below 3.5, ads get disabled.

Inventory — avoid the two killers

• Stockout — ranking crashes, ad spend wasted, recovery takes weeks. Buffer 30-45 days.
• Overstock — long-term storage fees, stranded capital, forced liquidation. Cut slow sellers fast.
• Reorder point = (daily sales × lead time) + safety stock. Reorder when you hit it, not after.

The metrics that matter

• Conversion rate (CVR) — visits ÷ orders. Amazon avg ~10-15%; below 5% = listing problem.
• ACOS / TACOS — ad spend ÷ ad sales (ACOS); ad spend ÷ total sales (TACOS). TACOS < 10% = healthy.
• Unit margin — after product + platform fee + ads + shipping. If < 20%, hard to scale profitably.
• Repeat rate — for DTC; 20%+ repeat = sustainable.