I don't think this is a matter of having or not having "enough trust" as Angell mentioned, rather this is a matter of having a common sense. Once you have the private keys that's it, nothing is stopping you from having these keys for ever and ever and ever and thus anytime in the future being able to take all the money from that address. Whatever you may possibly say, whatever promises, assurances etc., that's all just empty words, just blah blah blah.
Trust and
money are two totally incompatible concepts. There could be exceptions on case-to-case basis but this would require a lobotomy.
Furthermore, comparing the ability to anytime, for ever, take any amount of money from that address to a limited ability of one single particular chargeback of one single particular amount, that's so incomparable that the very fact that you are actually trying to make them seem similar is a red flag in itself.
I understand if you just want to make a few extra bucks but if you are really honest then just by trying this you are risking a permanent damage to your reputation and your reputation is in fact the only thing that proves your honesty. For a few bucks you are basically reducing yourself down to the level of this straightforward scammer
Symeave who opens an account, obtains some virtual credit cards with IBANs and then tries to sell those VCCs to the people here, of course without telling them that the VCCs are issued in his account and he has, and forever will have, full access to whatever money they ever send to the cards' IBANs. When I pointed that out (
https://bitcointalk.org/index.php?topic=1542649.msg15709256#msg15709256) he silently created the same thread again (
https://bitcointalk.org/index.php?topic=1565393.0), this time as a self-moderated topic so that he can delete any post that he doesn't like. Do you really want to be seen as the same lowlife scammer? The choice is yours.