Is it possible to sell product bundles with Bold Subscriptions, where each bundle (single, 3-pack, 5-pack, 10-pack) has a unique SKU with size variations?
Currently, Bold Subscriptions does not directly support selling bundles as subscriptions and does not integrate with third-party bundling apps, with the exception of Easy Bundles for build-a-box subscriptions.
More details on the integration between Bold Subscriptions and Easy Bundles can be found here - https://support.boldcommerce.com/hc/en-us/articles/25233956083604-Build-a-Box-using-Easy-Bundles-Subscriptions-for-Shopify-Checkout.