Replenish Alerter

Never stock out again —
SmartBuys tells you first

SmartBuys calculates days-of-stock for every SKU based on your real daily sales rate and supplier lead time. You get a reorder alert with exact quantity and order-by date — before Amazon ever flags it.

14 days

earlier than Amazon flags it

Zero

stockouts for active users

100%

of SKUs monitored automatically

Reorder alerts

Know what to order — and exactly when

SmartBuys monitors every SKU in real time. When a product's days-of-stock drops below your reorder threshold — factoring in your supplier's lead time — it fires an alert with the quantity you need and the date you need to order by.

Days-of-stock calculated from your real sell rate (DSA)

Supplier lead time built into every alert

Order-by date shown — not just 'running low'

Recommended order quantity calculated automatically

Replenish Now5 urgent

Out of stock

3 SKUs

Low stock

2 SKUs

Restock cost

£1,842

Est. profit

£612

Braun Series 3 21B — 4 days left

Order 11 units by tomorrow · Lead time 5 days · ROI 61%

Today

CoD Modern Warfare PS5 — 2 days left

Order 7 units today · Lead time 3 days · ROI 72%

Today

Oral-B Pro Floss Action — 13 days left

Order 53 units by Fri 8 May · Lead time 7 days · ROI 32%

Fri 8 May

CeraVe 177ml — 31 days left

Order 60 units by 6 May · Lead time 14 days · ROI 28%

6 May

DSA calculation

Based on your real sales rate — not Amazon's estimate

SmartBuys calculates your Daily Sales Average (DSA) from your actual order history — not Amazon's inaccurate "days of supply" estimate. Seller-driven DSA is the primary signal, with market-driven data as a fallback for new products.

SD DSA: your real 30-day sell rate (10+ units sold required)

MD DSA fallback for new or low-volume products

Backwards stock reconstruction for accuracy

Updated nightly with every new order

DSA breakdown — Braun Series 3

Units in FBA

Daily sales avg

2.8/day

Days of stock

Lead time

5 days

Order today — you will stock out before your order arrives