Construction sets: how to buy LEGO, magnetic or metal sets at a good price
The set number makes the best request
Every LEGO set has a number, for example City 60337 or Technic 42115. With it, sellers know exactly what you need, and prices become comparable. If you only write “LEGO for a 9-year-old boy”, the offers will differ in content and size. So before writing your request, find the number on the box or on the manufacturer's website.
On BlaBlaPrice you describe what you are looking for once, and sellers reply with offers in the chat: price, condition, completeness, delivery. It is free for buyers.
What to put in your request
- Set — the exact name and number or series: LEGO Technic 42115, Duplo, Cobi.
- Type of construction set — bricks, magnetic, metal, wooden, electronic or robotics.
- Number of pieces — for example, 500 or more.
- Child's age — the recommendation on the box and your child's real skills can differ.
- Original or compatible — whether a compatible alternative is fine or only the original.
- Condition — new and sealed, or used.
- Completeness — for used sets: all pieces, the box, the instructions.
- Budget and delivery city.
Example: “Looking for LEGO City 60337, new and sealed, original, for my 9-year-old son. Courier delivery to Sha Tin, budget up to HK$550.”
Used sets: what to look at
Used construction sets can vary a lot in price, but the key question is completeness. One missing piece in a complex set can ruin the build. Ask the seller to confirm that all the pieces are there, and ask for photos of the built model, the instructions and the stickers. Some sellers check a set by piece count, which is a good sign. Clean pieces with no smell show that they were washed and not just dried.
Original or compatible
Compatible sets can be cheaper and often fit with the original, but the quality of the pieces, the precision of the fit and the safety of the plastic vary. For small children, the material and clean edges matter especially. If you are buying for a collection or as a gift, the original is usually more reliable, while for everyday play a compatible set can be a sensible choice. The main thing is to say plainly what you need.
How to compare offers
- Whether the set number and version match.
- Whether the box is sealed and the packaging is undamaged.
- For used sets, whether extra pieces and instructions are included.
- How the set is packed for dispatch and what the return terms are.
The platform shows the offer with the best value first, with reviews next to it. Sellers see where they stand among the others and can improve their terms. Only the seller you choose sees your contacts.
People often add toy vehicles or toy figures to construction sets. For learning there are educational toys, and the rest is in the “Toys” section.
