@edge_price

Type:+Decimal
Contains the best price of the horse queried in that moment: back price if the bet will be of type Back, best lay price if the bet will be of type Lay.
It is used normally with bet of bid type * that means if the size of the bet is positive create a bet of type back, if the size is negative create a bet of type lay.

Example:

<bet index="3" bid_type="*">
<place condition="dbo.fn_betproperty(@id_trade,2,'status') = 4"
    price="@edge_price" size="@edge_size" />
</bet>
When the second bet of the trade is fully matched, creates a third bet to edge the profit&loss of the current trade.