keepsel
Keepsel for Subscription Boxes

Curate the box. Count the month. Keep the margin.

Keepsel is inventory and production software for subscription box sellers. Cost every curated item, box and insert per shipment, plan next month's build from your real subscriber count, and make ship week a checklist instead of a scramble.

Start free for 30 days See how it works

Try free for 30 days, with 25 Suli messages once you confirm your email (all of Suli from Maker). No card.

Track everything that goes into a subscription box

From raw materials to the finished piece, Keepsel keeps subscription box sellers on top of:

  • components and supplies
  • kit items
  • finishing materials
  • packaging

A subscription box in Keepsel

Product

Monthly Craft Box

SKU SUB-BOX-01

Material

Curated Item

tracked in each · Supplies

Supplier

Maker Supply Co.

Variations, from Maker

Size, Frequency

Worked example

Monthly Craft Box, costed line by line

This is the math Keepsel does for every product you make: every line from its recipe, updated whenever a material's price changes.

Before postage: the line that decides whether a $29 box is a business or a hobby with subscribers.

Monthly Craft Box

Curated items (4)
$8.40
Mailer box + crinkle
$1.35
Insert card + seal
$0.40
True cost
$10.15
Suggested price
$29.00/mo
Margin
65%

Built around how subscription box sellers actually work

  1. Every month is a product launch

    A new box every cycle means new items, new costs, new margins: twelve launches a year. A recipe for each month's box keeps its economics visible before the theme is locked.

  2. Subscriber count × items = the buy

    Two hundred subscribers and four items per box is eight hundred units to source on a deadline. Multiply your subscriber count by the box's recipe and sourcing becomes arithmetic.

  3. The box around the box costs money

    Mailer, crinkle, insert card, sticker seal: the unboxing experience is a per-shipment cost. In the recipe, it's priced into the subscription; outside it, it nibbles the margin monthly.

  4. Ship week eats calendars

    Hundreds of identical boxes assembled against a date. From the Maker plan, one work order draws every item for the build at once and counts the finished boxes, so packing day runs on lists, not vibes.

A day in Keepsel, for subscription box sellers

Step 1

Source against the count

Next month's items bought to subscriber numbers plus a churn-and-growth buffer.

Step 2

Recipe the month's box

Four curated items, mailer, crinkle and insert: the box's true cost per subscriber.

Step 3

Assemble as a batch

From the Maker plan, a work order for the 200-box build draws every item in one go and adds the boxes to finished stock (up to 10 a month on Maker as a trial and 100 on Team, unlimited on Business and Enterprise).

Step 4

Read the month, plan the next

Each month's box cost against the subscription price shows margin drift before it becomes a problem.

Questions subscription box sellers ask

How do I price a subscription box?

Cost a representative month (items, box, inserts, postage) and price so your worst-cost month still clears margin. Most boxes target items at 30–40% of the subscription price, leaving room for packaging, shipping and acquisition.

How many items should I buy for next month's box?

Current subscribers, minus expected churn, plus a new-signup buffer, times items per box. Working from your live count, not last month's memory, is what keeps you from eating 50 leftover units or air-shipping an emergency top-up.

How do I keep subscription box margins consistent?

Check each month's box cost against the fixed subscription price. Curation naturally drifts expensive; keeping each month's box as its own product with a true cost makes the drift visible while a cheaper hero item can still fix it.

What's the best way to manage ship week?

Batch assembly. From the Maker plan, one work order draws every item for all the boxes and adds the finished count to stock, and the add-ons and past boxes you sell come off their own finished-stock counts as you record each sale.

Can I sell past boxes and one-off purchases too?

Yes. Leftover boxes and individual items become their own products with known costs. One-off sales of past boxes are a margin-friendly way to clear the shelf and recruit subscribers.

Keepsel for other crafts

Home DecorEco ProductsHandmade ProductsCustom ProductsCraft SuppliesSee all crafts →

Guides for subscription box sellers

All guides

How to Price a Subscription Box (Twelve Launches a Year)

A subscription price is fixed; your monthly curation isn't. Price the box so your most ambitious month still clears margin.

How to Forecast Materials for a Big Order

Saying yes to a big order is the easy part. Making sure you have the materials to fill it, on time, is where it's won or lost. Here's how to plan it.

Cash Flow for Makers: Why Profit Isn't Money in the Bank

Profit is a number on paper; cash is what's actually in your account. They're not the same, and the gap is where makers get caught. Here's how to manage it.

How to Track Your Shipping and Packaging Costs

Boxes, tissue, labels, postage: the costs after the product is made. Most makers forget them, and it quietly shrinks every sale. Here's how to track them.

Run your subscription box business like a business

Know your true cost and margin and keep every material counted. Or try the free pricing calculator first.

Start free for 30 days See how it works

Try free for 30 days, with 25 Suli messages once you confirm your email (all of Suli from Maker). No card.