Describe the job accurately, including the address of every stop, anything unusual about the site and any proof you need. The price you set is the price; there is no surge pricing. Only verified clients can submit jobs.
Your payment is taken when you submit the job and held in escrow. If no provider accepts, you get a full refund. You see the full amount before you pay, and it never increases without your approval of a change request.
Either side can propose a change to the scope or price from the job screen. A change only takes effect when the other side approves it. A job cannot be turned into an in-home job after it has been accepted.
When the provider marks the job delivered, check the proof and mark it complete. That releases payment. If you do nothing for 72 hours after delivery, the job completes automatically. If something is wrong, raise it before then from the job screen.
Cancelling before a provider accepts is free. After that, a fee applies depending on how far the provider has got, as set out in the Cancellation & no-show policy. Refunds go back to the card you paid with.
Treat providers with respect, give safe access to the site, and do not ask for anything outside the agreed scope without a change request. Providers may leave any situation they believe is unsafe.