Bundles

Bundle dock

The running total while a bundle is being built. It floats over the seller's grid and carries the covers, what the goods cost together, what they cost apart, the rung that made the difference, and the step to the next rung; shipping and buyer protection wait for the review dialog. The count rides on the button.

It is composed, not configured: every part reads the bundle from BundleProvider, so a screen says what its dock contains rather than handing one card a list of props.