The sale is CONUS only. I guess my personal feeling is that I don't think it's unreasonable to expect a buyer to immediately follow up his "I'll take it" post with a pm or email of some kind.
I'm assuming, that you're referring to the new member with 4 posts, & zero feedback to his name? It's quite apparent, that he's a newbie, & either doesn't yet understand BF sales forum etiquette, or got distracted with something else important, on this Fourth of July holiday weekend? In this particular instance, I would most likely cut the newbie some slack & if you haven't heard from him by tomorrow morning, then move along to the next buyer.
Personally, I wouldn't appreciate it, if somebody acted in this manner in one of my sales threads.
Communication is a necessity (on both ends). If a perspective buyer has the time to post, wanting to buy a knife listed in a sales thread, he should have the common courtesy to follow up immediately, with either a PM, or email, & communicate exactly what his intentions are.
Most seller's here seem to set pretty straight forward, simple rules in their sales thread's, & a few spell out strict conditions/stipulations. To avoid this happening again in the future, I would post a disclaimer stating: if I don't receive some form of communication with 1-2 hours of posting "I'll take it" in my thread (to discuss payment arrangements), I'll move on to the next perspective buyer.
Good luck, Spinny!