It's a tall one fer sure...:^O
Any item that I have lots of (and always keep in stock) I generally give the buyer some space.
Often, they are ashamed to admit they are broke at the moment and they go through life this way (excuses for late payment).
With one exception, all of my buyers came through with payment later.
So, if you have lots of those and the price is high enough for you, there is no real downside in waiting - only an upside. If it's a unique item, your call.
You can always file an UID in March if the buyer does not pay. In situations where the buyer has at least communicated (no matter how incredible the excuse) I generally don't leave negs. I reserve that for no pay, no communication, no contest to UID.
And, yes, add it to the "weirdest" category...
Xena