the band's presale sold out in less than 2 hours, for the DC show, and it wasn't widely advertized. based on this, i expected the club's onsale to go quickly... and it did.
i don't think that TF's system automatically updates to "sold out" when all tickets are gone, i believe it's a manual process (someone has to update the page to show sold out). so even if the "Select number of tickets" pull-down is still on the page, it doesn't mean there still are tickets. i've gotten the "all tickets are currently in other people's shopping cart" message for hours, even though the show was likely already sold out.
stubhub has 140 tickets for sale because scalpers have put 140 tickets for sale there.