Filament subscription auto-ship, which provider (ReCharge / Bold / Skio) actually works on Magento?

Filament is a consumable. Subscriptions cut churn to Amazon ~40% and lift annual LTV from $180 (one-off buyer) to $640 (subscriber) in the cohorts I’ve seen. Don’t ship a maker store without this wired in. Four serious options on Magento:

• ReCharge Subscriptions, market leader. Native Magento integration via official extension. ~$99, $499/mo + 1% on subscription revenue. Best self-serve portal, best Klaviyo flows, best dunning. Default pick for $500k, $10M maker stores.
• Bold Subscriptions, cheaper for small stores ($49, $299/mo flat). Decent Magento connector via Bold’s commerce platform. Best for under $500k GMV.
• Skio, newer, faster checkout, sub-passwordless login. Magento via REST API integration (~$5k of custom work). Best for stores doubling subscriber count YoY.
• PayWhirl, cheapest ($25, $149/mo) but lighter feature set. Magento extension available. Best for under $100k GMV.

The pattern that matters more than provider pick: auto-ship cadence by color/material profile. A maker on PLA goes through 1 kg/month at $23/spool; on ABS they go through 600 g/month at $28/spool. Build the recommendation engine that picks cadence (monthly / 6-week / 8-week) by their typical print volume and material choice. Customers who use the recommendation engine churn ~22% less than those who pick cadence manually.