Inventory by store type

Inventory management for Shopify shipping supply stores

Shipping supply stores sell a wide mix of boxes, mailers, tape, and void fill where the same item comes in many sizes and pack counts. That makes manual reordering slow and error-prone, especially when a bestselling box size runs out mid-week.

The inventory problems shipping supply stores run into

  • Size and pack-count variants multiply SKUs. a single corrugated box style might exist in 10 sizes and 3 pack counts, turning one product into 30 trackable SKUs.
  • Bulky, low-margin freight. boxes and mailers are cheap per unit but expensive to ship, so suppliers push large case packs and pallet minimums that tie up cash and storage space.
  • Demand swings with other businesses' shipping volume. a single big customer (an Etsy seller or small fulfillment operation) can wipe out your stock of one box size overnight.
  • Custom or branded packaging has long lead times. printed mailers or branded tape often require proofs and minimum print runs, so reordering too late means weeks of stockouts.
  • Dimensional variety makes shelf space the real constraint. unlike apparel, you cannot just stack more product when every SKU takes a different footprint.

Seasonality and demand

Shipping supply demand tracks e-commerce peaks, so volume climbs from late summer through the holiday shipping season and stays elevated into January as customers handle returns. Back-to-school and spring cleaning can create smaller bumps if you serve small business or home-shipper customers. Because your own customers are reacting to their sales spikes, your orders can be sudden rather than gradual, so build in extra safety stock on top-selling box and mailer sizes before Q4 and confirm your suppliers' holiday cutoff dates for reorders well in advance.

Suppliers, lead times and minimums

Most shipping supply stores buy from corrugated box manufacturers, packaging distributors, and tape or void-fill converters. Domestic suppliers often quote lead times of one to a few weeks, while custom-printed or overseas-sourced packaging can take considerably longer. Case packs and pallet minimums are common since boxes and mailers are priced by volume, so expect MOQs measured in cases or full pallets rather than individual units.

Worked example

Say you sell a 12x9x4 inch corrugated shipping box that moves 18 units a day on average. Your supplier's lead time is 10 days, and you keep 4 days of safety stock, so your reorder point is 18 x (10 + 4) = 252 units. You want 20 days of cover, you currently have 140 units on hand and 100 already on order, so order quantity = 18 x (10 + 20) - (140 + 100) = 540 - 240 = 300 units. If the supplier's case pack is 50, you'd round that up to 300 units, which happens to land exactly on 6 cases.

Try it with your own numbers in the reorder point calculator, or size your buffer with the safety stock calculator.

A simple system to start this week

  1. List every box, mailer, and tape SKU with its real case pack and pallet minimum from the supplier.
  2. Set a lead time and safety day count for each supplier, separating domestic from custom-print or overseas sources.
  3. Identify your top 10 moving SKUs by volume and double-check their reorder points before Q4.
  4. Confirm holiday order cutoff dates with every supplier in writing, especially for custom or branded packaging.
  5. Review on-hand counts against open purchase orders weekly so you are not caught short on a popular size.
  6. Track any custom print runs separately since their minimums and timelines differ from stock boxes.

How SteadyShelf fits shipping supply stores

SteadyShelf fits shipping supply stores well because it handles the core problem: many size and pack-count variants, each needing its own order-by date and case-pack-rounded quantity. It will draft and email your purchase orders and receive stock as it arrives, including partial shipments on backordered sizes. It does not track lot or expiry, which is rarely an issue for boxes and tape anyway, and it does not manage multi-location transfers, so if you stock supplies at more than one warehouse you will need to handle those transfers separately.

$29/month flat, unlimited products and suppliers, 30-day free trial.

SteadyShelf is launching on the Shopify App Store. Join early access to get the install link first.

More: inventory management by store type · inventory glossary · Stocky alternatives

FAQ

Can SteadyShelf account for the fact that pallet minimums differ from case pack minimums?

Yes. You set the rounding rule per SKU per supplier, whether that is a case pack of 50 or a pallet minimum of 500. SteadyShelf rounds suggested order quantities up to whatever minimum you define.

We sell custom-printed mailers with a long production lead time. Does SteadyShelf handle that differently from stock boxes?

You enter the longer lead time for that SKU and supplier, and SteadyShelf calculates an earlier order-by date accordingly. It does not manage print proofs or production scheduling itself, just the timing and quantity of when to place the order.

Does SteadyShelf track expiry on void fill or adhesive products that can degrade over time?

No, SteadyShelf does not do lot or expiry tracking. For items like tape with an adhesive shelf life, keep a manual note of production dates or rotate stock first-in-first-out on your shelves, and use SteadyShelf just for the reorder timing and quantity.

Let SteadyShelf do this math for every SKU

Order-by dates per supplier, seasonal forecasts and draft POs for your Shopify store. $29/month after a 30-day free trial.

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