You can use a third party re-pricer on a channel, but because it is being used directly on a channel any fields it is acting on will be out of sync with the values in SureDone.
This is fine for price, but YOU MUST TURN OFF ANY INVENTORY FUNCTIONS ASSOCIATED WITH THE RE-PRICER.
If you do not turn off these functions then your stock may get out of sync and cause oversells which will affect your seller standing on that channel.
Please create a support ticket before you start using it so our team can discover more about your needs and may also be able to provide a solution using internal automations / rules that can be set up within your account.