Only 350 units of the Willey-Models-Jillian-18-sets were produced globally. Each box includes a numbered brass plaque. Since the mold was destroyed in a workshop fire in 2019, unopened sets have become investment-grade collectibles.
As of 2025, the secondary market for Willey-Models-Jillian-18-sets has seen a 300% price increase since 2020. Willey-Models-Jillian-18-sets
For investors, the complete collection (all 18 sets in a single auction) fetched $14,500 at Heritage Auctions in late 2024. For investors, the complete collection (all 18 sets
This is where the "18-sets" concept shines. Willey provides modular hardpoints on the figure’s limbs and back. The eight wardrobe sets include: Willey-Models-Jillian-18-sets
What makes the Willey-Models-Jillian-18-sets so desirable? Three factors: Engineering, Aesthetics, and Scarcity.
Before examining the Jillian series, it is essential to understand the manufacturer. Willey Models was founded on a principle of "engineering in miniature." Unlike mass-produced plastic kits that often suffer from mold lines and soft details, Willey focuses on resin casting and high-fidelity 3D-printed masters. Their target audience includes professional illustrators needing reference models, stop-motion animators, and collectors who demand museum-grade pieces.
Over the last decade, Willey has released several "thematic series" – each named after a prototype designer. The Jillian line is unique because it represents a fusion of anatomical study and modular design.