This may have been asked in the past 75 pages, but not easy to find. Want to see if folks think that this may be a bit too "scammy" to be worth doing (and some may rightly say that if I'm asking I likely already know the answer, but asking anyway

).
Consider a $179 ticket. So, but a ticket for $85. Cancel, but keep the money as TF, rather than getting a refund. Then buy the desired ticket using the TF and the card for under $100.
Likely to work? Likely to get flagged?
Cheers.