Choosing moc parts & building pieces usually comes down to one fork: do you want a large, unpredictable supply for freeform building, a vehicle-heavy lot, a themed build, or a focused run of one component? These four choices serve different projects, so price alone does not settle the decision. Match the parts format to how you plan to build, sort, display, or replace pieces.
Quick take
- For broad, open-ended MOC work: LEGO Random Parts Bulk Lot
- For cars and trucks: LEGO Mixed Vehicles Bulk Lot
- For a guided themed scene: Modubrix Medieval Haunted Cemetery MOC Set
- For replacement components: Building Ball Joints Bulk
Listed-price comparison
The listed prices cover very different buying formats, from a compact component pack to bulk lots sold by weight and a defined building set.
| Product | Listed price | Price bar |
|---|---|---|
| LEGO Random Parts Bulk Lot | USD 142.00 | |
| LEGO Mixed Vehicles Bulk Lot | USD 79.99 | |
| Modubrix Medieval Haunted Cemetery MOC Set | USD 129.31 | |
| Building Ball Joints Bulk | USD 14.62 |
Decision matrix
- For broad sorting: LEGO Random Parts Bulk Lot - the random, multi-color, sold-by-weight format points to open-ended MOC work.
- For vehicle projects: LEGO Mixed Vehicles Bulk Lot - cars and trucks, an over-five-pound lot, and pictured contents make vehicle parts the focus.
- For a themed scene: Modubrix Medieval Haunted Cemetery MOC Set - its medieval haunted cemetery theme, box packaging, and digital PDF instructions create a defined build.
- For replacements: Building Ball Joints Bulk - dark gray ball joints in a plate-special format are aimed at replacing or adding one component.
Product notes
LEGO Random Parts Bulk Lot

Choose the LEGO Random Parts Bulk Lot when a large supply matters more than receiving a tightly defined selection. It contains 20 lbs of multi-color plates, blocks, and assorted pieces, with themes including Star Wars, Marvel, ninja, city, Friends, and Jurassic Park. The parts are washed and sanitized and sold by weight, which suits large-scale MOC projects and builders who enjoy sorting before creating. The limitation is the format: the assortment is random and used, so it is not a targeted way to obtain a particular element, theme, or color. Its USD 142.00 price also makes the bulk format an important part of the buying decision.
LEGO Mixed Vehicles Bulk Lot

For a vehicle-centered parts hunt, the LEGO Mixed Vehicles Bulk Lot brings cars and trucks from incomplete sets, with over 5 pounds of parts. It is genuine LEGO, and the contents are described as everything pictured rather than a random assortment, giving the project a more defined theme. That makes it a practical match for builders who want vehicle elements to anchor an MOC or rebuild. The limitation is equally clear: the sets are incomplete and sold as-is. The contents are therefore oriented toward sorting and combining, not toward following a complete original set build. Choose it when cars and trucks matter more than broad, all-purpose variety.
Modubrix Medieval Haunted Cemetery MOC Set

The Modubrix Medieval Haunted Cemetery MOC Set suits a builder who wants a single visual concept instead of a loose parts bin. Its medieval haunted cemetery theme, 2,025 pieces, new condition, and box packaging point toward a focused display or collection project. A digital PDF instruction manual accompanies the set, giving the build a guided route while keeping assembly hands-on. The limitation is the age and setup: it is marked for ages 14+, and it is not pre-assembled. Anyone hoping to open a finished scene or work from a printed manual should account for the self-build format and digital instructions before choosing this themed set.
Building Ball Joints Bulk

Need a focused component rather than a box of mixed bricks? Building Ball Joints Bulk offers 70 dark gray building ball joints in the plate special 1x2 format with a 5.9mm end. The pieces are intended for replacement use and MOC building, making the pack relevant when a specific joint or connection detail is the priority. Its compact, single-part focus is the main reason to choose it. The limitation is scope: the color, shape, and count are specific, so it is not suited to a builder seeking assorted plates, broad color variety, or a themed scene. It is a component purchase, not a guided vehicle or display set.
Final recommendation by use case
- Broad MOC sorting: Choose LEGO Random Parts Bulk Lot.
- Cars and trucks: Choose LEGO Mixed Vehicles Bulk Lot.
- Medieval display building: Choose Modubrix Medieval Haunted Cemetery MOC Set.
- Replacement ball-joint work: Choose Building Ball Joints Bulk.
The central decision is format. The two LEGO choices are used bulk lots, but one emphasizes random multi-theme variety while the other centers on vehicles and incomplete sets. The Modubrix set is a new, guided scene build, while the ball-joint pack is a focused component purchase. Decide whether your next project needs discovery, a defined theme, or one particular kind of piece, then use the listed price as the final tie-breaker.