The prices quoted on the Lyra trade page are for a one standard size trade, normalized to a 1 contract trade. This means that if the standard size of the ETH market is 0.1, then the quote on the trade page will be the price per option, assuming 0.1 contracts' worth of slippage. The standard size varies per asset and will likely vary across different option rounds.
What does this mean for traders?
If your trade is less than one standard size, you can expect to get filled at a price better than the price quoted on the trade page, due to less slippage
If your trade is greater than one standard size, you can expect to get filled at a price worse than the price quoted on the trade page, due to increased slippage
Always double check the quoted price on the trade form before you confirm a transaction.
The below images illustrate this effect. For 0.1 contracts (image 1), the price per option is $195.64, and for 1 contract (image 2) the price per option is $196.06, representing $0.42 of slippage per option.