Assuming they leave enough for ppl to buy; which is kindof a problem, especially on week-ends. Note that SOMETIMES you get lucky and I can get maybe 2-3 regs @ over 300 stock. That being sid, I'm in the camp that beleives the Regs buying macro shoudn't be allowed.In a sense, afk reg buyers are helping to keep the vendors stock at a reasonable level. Imagine if you wanted to buy up a vendor to 500 of ea. reg with the current mechanics!!
Maybe we should do an exception to Era specific rules for the ressources vendors, as they "drain" money for economy, and then the unattended macroing is irrelevant. When vendors are at 999 of each reagents you are bound to find one to buy from. Or just set their timers back to 30min, while keeping the +9 per refresh.
It would satisfy both parties in any case.