Difference between prices on website and API

[SamuelMichelRiad1]

Hi all,

I'm having a problem whereby the prices returned by the API do not match the prices I see on the website, despite having requested virtual prices in my call to listMarketBook. For market 1.154508381 (Villareal v Sevilla, Match Odds) the best lay price on Sevilla is 3 on the website, but the price returned from the API is 3.05.
I am using the delayed key, but as far as I understand, the delay is up to 60 seconds. However, I have observed this price difference for more than half an hour.

Any insight as to what is going on, or if I am calling the listMarketBook incorrectly?

Thanks,
Sam

[LiamP]

Likely to be the delayed key, if you are using it don’t bother trying to reconcile.