If you have ever looked at a fan-designed MOC and thought "I want to build that," you have two main options. You can buy a complete kit from a company like LetBricks that ships you every brick and a printed instruction booklet. Or you can source the parts yourself through BrickLink, the massive marketplace where independent sellers stock millions of LEGO elements.
Both approaches get you to the same place - a finished custom build sitting on your shelf. But the experience of getting there is radically different, and the right choice depends on what you value: convenience, cost, control, or some combination of all three.
We have built dozens of MOCs through both channels. Here is what we have learned.
| Factor | LetBricks | BrickLink MOC |
|---|---|---|
| Brick quality | LEGO-compatible (very good) | Genuine LEGO |
| Price (typical 3,000 pc set) | $80-$150 | $150-$350+ |
| Instructions | Printed booklet included | Digital (PDF/Studio), often paid |
| Ordering effort | One click, one shipment | Multiple sellers, multiple orders |
| Shipping time | 1-3 weeks | 3-14 days (varies by seller) |
| Missing parts risk | Low (pre-packed) | Medium (human picking) |
| Design variety | Curated catalog (200+) | Unlimited (thousands of designers) |
| Clutch power | Very good, slight variation | Authentic LEGO standard |
| Resale value | Low | Parts retain LEGO value |
This is where the conversation usually starts and often ends. LetBricks kits are dramatically cheaper than sourcing the same build through BrickLink with genuine LEGO parts. We are talking 40-60% savings on most builds, sometimes more.
A 3,000-piece medieval castle from LetBricks might run $100-$130. Sourcing the same design through BrickLink with authentic LEGO bricks? Expect $250-$350, sometimes more if the design calls for rare colors or retired elements. The gap widens further on larger builds. A 5,000+ piece ship that costs $150 from LetBricks could easily hit $500+ on BrickLink.
The reason is straightforward: LEGO bricks are premium-priced products. BrickLink sellers are reselling genuine LEGO at market rates, plus shipping from multiple stores. LetBricks manufactures their own bricks at a fraction of the cost.
If budget is your primary constraint, LetBricks wins this category decisively. It is not close.
Here is where things get more nuanced. Genuine LEGO bricks are the gold standard for a reason. The tolerances are absurdly precise, the clutch power is consistent across decades of production, and the color matching is nearly perfect. When you build a BrickLink-sourced MOC with real LEGO, every connection feels right. There is a tactile confidence that is hard to describe until you have experienced it.
LetBricks uses high-quality compatible bricks that have improved dramatically in recent years. The clutch power is good - not quite LEGO-level, but close enough that most builders will not notice during the build. Color matching is generally strong across standard colors, though some rare or specialty colors can show slight variation between batches.
Where you do notice the difference is in specific element types. Transparent pieces, flexible elements, and very small parts sometimes feel different. Technic pins may be slightly tighter or looser. These are minor things, but if you are the kind of builder who notices, they add up over a 3,000-piece build.
For display purposes, the finished builds from both sources look excellent from normal viewing distance. Put a LetBricks castle next to a LEGO castle on a shelf, and most visitors will not know the difference. Under close inspection and handling, genuine LEGO still has an edge.
The ordering experience is where these two platforms diverge most dramatically. LetBricks works exactly like buying a LEGO set: browse the catalog, add to cart, wait for the box to arrive. It takes five minutes.
BrickLink sourcing is an entirely different animal. You need to:
- Find the MOC instructions (Rebrickable, a designer's Patreon, etc.)
- Export the parts list (usually through BrickLink Studio)
- Upload the wanted list to BrickLink
- Run the auto-match to find sellers who stock your parts
- Optimize across multiple sellers to balance price vs. shipping costs
- Place 3-8 separate orders (typical for a large MOC)
- Wait for all packages to arrive
- Sort and inventory parts before building
For some builders, that process is part of the fun. There is genuine satisfaction in hunting down the perfect lot of dark tan 1x2 bricks at a great price, or finding a seller who has 80% of your list in one shop. It scratches a collecting itch that goes beyond the building itself.
For others, it is a barrier. If you just want to build something cool this weekend, BrickLink sourcing adds days or weeks of lead time and administrative effort. LetBricks removes all of that friction.
We have a full guide on BrickLink sourcing if you want to try it: BrickLink Beginner's Guide and Wanted Lists Guide.
LetBricks offers a curated catalog of 200+ designs. The selection is strong - medieval builds, trains, architecture, vehicles, ships, and more. We have reviewed over a dozen and the design quality is consistently high. These are not knockoff LEGO sets; they are original designs created for the platform.
BrickLink, combined with instruction sources like Rebrickable, gives you access to tens of thousands of designs. Want a 1:40 scale Boeing 747? Someone has designed it. A microscale version of your hometown? Probably exists. A working pinball machine? Multiple options. The variety is essentially limitless.
The trade-off is quality control. LetBricks designs have been tested and refined before they hit the catalog. BrickLink MOCs vary wildly - some are engineering masterpieces, others have structural issues that only become apparent mid-build. Reading reviews and checking the designer's reputation becomes part of the process.
Check out some of our favorite LetBricks builds:
- Pirate Island Fortress - 5,650 pieces of seafaring adventure
- Union Pacific Big Boy - stunning locomotive at a fraction of the cost
- Working V8 Engine - mechanical marvel you can actually crank
- Neuschwanstein Castle - fairy tale architecture in brick
Whether you build with LetBricks kits or BrickLink-sourced MOCs, keeping track of your collection matters. GameSetBrick helps you catalog official LEGO sets alongside your custom builds.
Vault: Track every set you own, including build status and display location.
Market Prices: Know the current value of official sets in your collection.
Wishlist: Keep a running list of sets you want, whether they are official or MOCs you plan to source.
- Vault Collection Tracker - organize everything you own
- Market Prices and Deal Scores - know what your sets are worth
The LetBricks vs. BrickLink debate often turns into a proxy war about "real LEGO" vs. "clones," but that framing misses the point entirely. Both platforms exist to help people build amazing things. The best choice is the one that gets you from wanting a build to having a build with the least friction and the most enjoyment.
If you have been eyeing a MOC design for months but the BrickLink sourcing process intimidates you, try a LetBricks kit. If you love the hunt and want every brick to be genuine LEGO, BrickLink is your playground. Either way, you end up with something custom, something different, something that no official LEGO set offers.
And that is the whole point.
Browse all of our reviews for both official LEGO and alternative sets, or explore our full LetBricks overview for more on the platform.