How Do I Know the Price for My LEGO Is Fair?

You do not need to become an expert to sanity-check a figure. You need one hour and a sample. Here is the method.

Step one: price your top five yourself

A collection is usually top-heavy. Five or six sets often carry a large share of the value, so pricing those tells you most of what you need.

1. Pick your five or six biggest or most sought-after sealed sets.
2. For each, find what it has actually SOLD for recently, not what it is listed at. Most marketplaces let you filter to completed sales.
3. Ignore the highest and lowest results. Look at the middle of the range.
4. Note whether those sold examples were sealed and in what condition, because that is what you are comparing to.
5. Add your five or six together.

Step two: work out the proportion

Take the offer for the whole collection and compare it against your sample plus a sensible allowance for the rest. You are not looking for a precise percentage, you are looking for whether the figure is in a sane region or nowhere near.

Step three: judge the gap honestly

There will be a gap between what the sets are worth on the open market and what any buyer offers. That gap is not a trick. It pays for a real list of things.

• Every set being listed, photographed and described.
• Every sale being packed properly and posted.
• The transport to come and get it from you.
• Holding the stock, sometimes for a long time, before it sells.
• The sets that do not sell at the expected price, or at all.
• Selling costs and payment fees on every sale.

The honest way to think about it: the offer is what the collection is worth to somebody who has to do all of that. The market value is what it is worth to you if you do all of that. Both numbers are real.

Questions that expose a weak offer

• What condition does this figure assume? A buyer who has not asked about your boxes has not really priced them.
• Is this for the whole lot, or only the parts you want?
• Does the figure change when you see it?
• Who pays the transport, and is that inside or outside the number?
• When am I paid?

Two offers beat any amount of research

The fastest way to know whether a figure is fair is to get a second one. It costs you an email. If the two are close, you have your answer. If one is far below the other, you have learned something about the low one. If a buyer discourages you from doing this, that is information too.

What makes a figure more accurate

Accuracy runs both ways and it depends mostly on you. A list with set numbers and an honest word about the worst box produces a figure that reflects what you actually have. A vague description produces a cautious figure, because the buyer is pricing the risk of what they cannot see. Telling us about the crushed corner does not lower the offer so much as make it real.

How we arrive at a number

We price every set individually against what it is currently selling for, rather than applying a multiplier to the pile. Where a set has no meaningful recent sales history we say so rather than inventing a figure. Then one number for the whole lot, worked out from your list before anybody travels, and that is the number you are paid.

Written by Peter Pilling, BuyMyBricks, 26 September 2026. LEGO® is a trademark of the LEGO Group, which does not sponsor, authorise or endorse this site. This article describes a method for sanity-checking an offer. It is not a valuation and not a quote.