This page prices a find, not a craft. The Prototype upgrade can't be crafted or researched, so its Level 2 line never unlocks. What you hold is two gears, a stack of scrap and two pieces of tech trash, the same tech trash a C4 needs.
So decide before the recycler. The ordinary one returns a gear and a single tech trash, half a C4's worth, and no scrap. Fitted, the upgrade lets its bench unlock any blueprint in the tree without buying the path to it, at double the price and with a one-in-four chance to fail and still take the scrap.
Watch out
Don't fit it on a whim. Wait until the box holds your target at the doubled price, plus a second try.
It suits one wanted blueprint deep in a tree, as its item page says. If the group will clear the whole tree anyway, the Salvage upgrade saves more.
Questions
Prototype Workbench Upgrade ×10: how many resources?
Scrap ×3,000, Gears ×20, Tech Trash ×20.
Which workbench does Prototype Workbench Upgrade need?
Workbench level 2.
How long does Prototype Workbench Upgrade take to craft?
