We ask you to select a budget when you publish a task in order to specify how much you would want to spend. This sum is only a beginning as Helpers who want to take up the task will make an offer for a sum which they think accurately captures the time, expertise and labour necessary to complete it.
Make sure that you consider how long you anticipate the task take and what a reasonable reward may look like for the work you require.
By using the comments feature on the task prior to assigning, you may negotiate a fee with the Helper based on both of your expectations.