whats this all about please explain?
CoinJar Filler is just an app for CoinJar. When you sell Bitcoin, you are not authorising a payment directly in your wallet, so you need to give CoinJar Filler authority to take Bitcoin out of your CoinJar. We obviously own both services so this is just a matter of explicit consent.
You won't be charged anything if you don't place a sell order.
my concern is "at any time"
does this mean say I had 1 btc in coinjar, you could just come and take that so meet some other short term supply demand....?
also when you say wallet you you mean my coin jar wallet?
This phrase describes what CoinJar Filler can technically do by the establishment of the billing agreement. We won't do that.
If you replace "CoinJar Filler" with "SomeRandomApp", the same phrase should make sense to you. It's like giving out your credit card number to a merchant, who can really take money from you "at any time".