A variant with no price is no longer published to a channel

For BigCommerce a product was blocked only when none of its variants had a price, and for Shopify only when the product was new. So the same product could read Blocked on one channel and Needs attention on the other, and a product with some prices missing still published its unpriced variants, at a price the channel invented. Now a variant without a price is never published on either, and the product shows Blocked until you give each variant one. What each notice means is in Sync issues.