Options for the Guild...
Role play through the encounter at the gate and the interactions with the shop keepers...
Or
Double check your characters, buy what you need, post the updated sheets here, and we move on from there.
Let me know which you would prefer.
The Guild stores have everything in the PHB, plus everything under 3000 gp in the DMG "in stock" so to speak, at the prices listed. Some exotic weapons aren't readily available, however, specifically kamas, nunchakus, sais, sianghams, dwarven waraxes, orc double axes, gnome hooked hammers, dwarven urgroshes, and shuriken. Anything over 3000 gp, or the weapons specifically listed above, can often still be purchased, but there's a waiting period while the Guild's merchants order the item, or the item is made by the Guild's crafters. Prices and availability outside the Guild fluctuate severely, with anything magical being difficult to track down (typically a Gather Information check followed by a waiting period for the item to be made). The Guild specifically does not have available anything that detects as evil, requires an evil spell to create, or is illegal within Azgund (poisons specifically, and a few other items here and there).