There is no fixed structure to the value of a dowry. The transferred value is dependent on the social and economic circumstances of the families. Dowry is not related to an ability to pay, but to meet the demand is in the aim to secure a good home/union. As such dowry related debt is not uncommon.
The total value of dowry payments is complex as payments can be made prior to the wedding, at the wedding and in some cases consistently throughout the entire marriage. Payments can be in cash, goods, gifts at every occasion, a transfer of assets, shares in investments, inheritance of business ventures or servitude.
In Australia dowry can be a visa, down payment on a property, business or purchase of an asset. These days it is big business, so can be major driving force in partner selection.
Dowries are given in response to demands or expectations, regardless the payer can afford it. The expectation in return is that the other party will accept and treat their child (mostly women) well throughout the union.