As stated in this post, we have no problems using escrow with a reputable escow such as miner Jones
You're talking about truckloads of masks here, I don't think minerjones wants that delivered to his PO box.
Vod's warning is correct though: many criminals are now trying to profit from the lack of medical protection equipment. In the Netherlands,
2 guys have been arrested for this.
If you are a legit supplier, I can't think of any reason why you'd suddenly need to sell your product on Bitcointalk,
the moment the worldwide demand for your product exploded!
On the other hand, if you're not a legit supplier, I can think of many reasons why you suddenly try your luck here.