
Sell by Weight & Length
Sell by weight
Amounts like 1.25 kg or 2.40 m with quick amounts, a live total, exact decimal stock and real shipping weight.
$99
Platforms
CS-CartAdd-ons and themes for CS-Cart and Multi-Vendor
OpenCartExtensions and themes for OpenCart 4 and 3Stores
For PrestaShop 8.2 and 9.x
Sell by weight or length, let shoppers make an offer, personalize products with a live preview and win back abandoned carts. One package for PrestaShop 8.2 and 9.x, Classic and Hummingbird themes, and no overrides.

PrestaShop
One page per module: the problem it solves, the options, how it works and real screenshots.

Sell by Weight & Length
Amounts like 1.25 kg or 2.40 m with quick amounts, a live total, exact decimal stock and real shipping weight.
$99

Make an Offer
A Make an offer button with negotiation rounds; the agreed price is a specific price bound to one cart.
$75

Product Personalizer
Names, dates and initials previewed on the product image, with fees checked on the server and a production sheet.
$99

EU E-Invoicing
Factur-X/ZUGFeRD, XRechnung and Peppol BIS 3.0 e-invoices with your PrestaShop invoice numbers.
$99

Abandoned Cart Recovery
Up to three reminders, single-use vouchers, a signed restore link and recovered revenue per reminder.
$75

Atelier: Fashion Theme
A lookbook-style fashion theme for Classic-based shops, with colour swatches, size chips and four presets.
$89

Volt: Electronics Theme
A deal-first child theme of Classic for gadget stores, with spec cards, countdowns and four presets.
$89

Gloss: Beauty & Cosmetics Theme
A child theme of Classic for beauty stores, with brand offer tiles, shade swatches, unit prices and a routine builder.
$89

Hearth: Home & Kitchen Theme
A child theme of Classic for furniture and homeware, with a room hero, studio cards and a delivery panel.
$89

Kite: Toys & Baby Store Theme
A child theme of Classic for toy and baby stores, with shop by age, a gift finder, safety shields and a gift set builder.
$89

Pantry: Grocery & Food Store Theme
A child theme of Classic for food stores, with aisle bubbles, one-tap Add buttons, price per kg and a recipe block.
$89

Axle: Auto Parts Theme
A premium, conversion-first child theme of Classic for parts stores, with a garage finder, fitment badges, a fit check and a Complete the job builder.
$89
PrestaShop
Complete storefront looks with presets and demo content. Prices are one-time, in USD, per store.

A lookbook-style fashion theme for Classic-based shops, with colour swatches, size chips and four presets.

A deal-first child theme of Classic for gadget stores, with spec cards, countdowns and four presets.

A child theme of Classic for beauty stores, with brand offer tiles, shade swatches, unit prices and a routine builder.

A child theme of Classic for furniture and homeware, with a room hero, studio cards and a delivery panel.

A child theme of Classic for toy and baby stores, with shop by age, a gift finder, safety shields and a gift set builder.

A child theme of Classic for food stores, with aisle bubbles, one-tap Add buttons, price per kg and a recipe block.

A premium, conversion-first child theme of Classic for parts stores, with a garage finder, fitment badges, a fit check and a Complete the job builder.
PrestaShop
A theme or a set of extensions at one price, with one update and support period for everything. One-time prices in USD, per store.
Save 24%
Includes: Atelier: Fashion Theme + Product Personalizer + Abandoned Cart Recovery
Save 25%
Includes: Volt: Electronics Theme + Make an Offer + Abandoned Cart Recovery
Save 28%
Includes: Hearth: Home & Kitchen Theme + Sell by Weight & Length + Make an Offer
Save 28%
Includes: Gloss: Beauty & Cosmetics Theme + Product Personalizer + Abandoned Cart Recovery
Save 28%
Includes: Kite: Toys & Baby Store Theme + Product Personalizer + Make an Offer
Save 28%
Includes: Pantry: Grocery & Food Store Theme + Sell by Weight & Length + Abandoned Cart Recovery
Save 25%
Includes: Axle: Auto Parts Theme + Make an Offer + Abandoned Cart Recovery
Save 34%
Includes: Sell by Weight & Length + Product Personalizer + Make an Offer
Save 32%
Includes: EU E-Invoicing + Abandoned Cart Recovery
PrestaShop
Prices are one-time, in USD, per PrestaShop store.
The modules use PrestaShop hooks and its own price and customization logic, so upgrades and other modules keep working.
One package installs on PrestaShop 8.2 and 9.x, with the Classic and Hummingbird themes and the 9.2 one-page checkout.
Every module page shows real screenshots and the full documentation, and every order has a 30-day refund.
Pay once per store. 12 months of updates and support are included; after that the module keeps working, and renewal is optional at 50%.
Guides
Guide
How five platforms handle 1.25 kg or 2.5 m, the usual workarounds and what to check before you choose.
Read the guideGuide
XRechnung, ZUGFeRD/Factur-X and Peppol BIS 3.0 explained, with the DE, FR and BE timelines and a store checklist.
Read the guideGuide
Hidden minimums, auto-accept and auto-decline thresholds, deadlines and limits that keep offers profitable.
Read the guideFAQ
PrestaShop 8.2 and 9.x, from one package, tested on 8.2.8 and 9.2.0. PrestaShop 9 needs PHP 8.1 or newer.
No. They work through hooks and PrestaShop’s own mechanisms, such as specific prices and module customizations.
No. You pay once per PrestaShop store. 12 months of updates and support are included, and you can choose 24 or 36 months at checkout.
Classic, Hummingbird and themes built on them, with the standard checkout and the PrestaShop 9.2 one-page checkout.
Yes. Ask within 30 days of your first purchase of a module, from your account or by ticket.
Product pages on the store have screenshots, the full documentation and the changelog.
Kavio Labs
The same standards, the same support desk and one licence portal on every platform we build for.