The spread is the gap between the price you can sell at and the price you can buy at, and it is a real cost paid the moment you transact — before any fee with a label on it. On thinly traded pairs it does more work than the whole fee schedule, which is why a platform advertising zero commission is not necessarily cheaper. This page covers the spread, and then goes one level below it: where each half of a quoted price actually comes from, and what that means for how far you can trust a given figure.
The first leg: bitcoin’s dollar price
There is no single official bitcoin price. BTC trades on many venues simultaneously, each with its own order book, and they do not agree exactly. What most sites call “the” price is an index — an average across selected venues, usually weighted by volume, with outliers filtered out.
That means the first leg of your quote already embeds someone’s methodology: which venues were included, how they were weighted, how stale data was handled. Reputable index providers publish those rules. The practical upshot is that small differences between sites are normal and not evidence that any of them is wrong.
The second leg: dollars to lari
The other half is an ordinary foreign-exchange rate, and it behaves quite differently from the first. Currency markets have hours, holidays and lower weekend liquidity, while bitcoin does not stop. A platform quoting BTC/GEL over a weekend is pairing a live crypto price with a currency rate that may have last moved on Friday.
Platforms also choose their source here, and the choice matters: an interbank reference rate, a national bank’s published rate, and a retail rate a business will actually transact at are three different numbers. A site that does not disclose which it uses is asking you to trust half its quote blind.
Half of a crypto quote in a local currency is not a crypto number at all.
Why the two legs together behave oddly
- Movement with no crypto news. A currency move alone changes the lari figure. People reading only bitcoin headlines find this inexplicable.
- Weekend flatness then a Monday step. If the currency leg is stale over a weekend, the lari price can look artificially steady, then jump when the fresh rate arrives.
- Divergence between sites widens in volatility. When either leg moves fast, differences in update frequency show up as visibly different quotes.
What a trustworthy quote discloses
- A timestamp, and ideally an update interval.
- The source of each leg — which index for BTC, which reference for the currency.
- Whether it is mid-market or transactable, which is the difference between information and an offer.
- What is excluded — most converters quietly exclude every fee, and the honest ones say so.
A converter missing all four is not necessarily dishonest; it is simply not making a claim precise enough to rely on for anything that matters.
Staleness is not the same as stability
A quote that has not changed recently can mean two opposite things, and converters rarely distinguish them. It can mean the market is genuinely quiet. It can also mean the feed stopped updating. From the outside these look identical, which is why an update timestamp is worth more than it appears — it separates a calm market from a broken pipe.
The asymmetry matters most in fast conditions. A stale quote during a sharp move is the most dangerous number on the page, because it is both wrong and reassuring at the same time, and it is precisely when a user is most likely to act on it.
Reading the spread properly
On thinly traded pairs the spread does more work than the fee schedule. It is quoted as two numbers — what you can sell at, and what you can buy at — and the gap is a real cost borne immediately, before any labelled fee applies. A platform advertising zero commission on a pair with a wide spread is not cheaper; it has moved the cost somewhere less visible.
The way to see it is to look at both directions at once. Ask what you would receive selling a unit and what you would pay buying the same unit at the same moment. The difference is what the venue charges for standing between the two.
Related
What “bitcoin gel” means covers the conversion itself and the practical comparison method. How this site works sets out the sourcing rule these pages follow.
Frequently asked questions
Is there one official bitcoin price?
No. Bitcoin trades on many venues at once and they do not agree exactly. What sites call 'the' price is an index u2014 an average across selected venues, usually volume-weighted with outliers filtered. Small differences between sites are normal.
Why does the lari price of bitcoin sometimes look flat all weekend?
Because the currency leg may be stale. Bitcoin trades continuously but currency markets have hours and holidays, so a weekend quote can pair a live crypto price with a rate that last moved on Friday u2014 then step when the fresh rate arrives.
What should a trustworthy converter disclose?
A timestamp and update interval, the source of each leg, whether the number is mid-market or actually transactable, and what it excludes u2014 most converters exclude all fees, and the honest ones say so.
Is a zero-commission platform cheaper?
Not necessarily. On a thinly traded pair the spread can cost more than any commission. A venue advertising no fee alongside a wide spread has moved the cost to a less visible place, not removed it.