It is also worthwhile noting that it is possible to buy a small range of low Ranked Weapons and such from NPCs within the Market Wards. For Gladiator Weapons head to the Battlecraft Ward - the NPC should be in the centre area with the benches and such. For armour, check out either the Lower Tailor Ward or Armourers Ward - they should have something of use to you there.

Note that they are decently priced for the lower Ranked stuff, but anything above the Rank 10 or so basics they start to become a bit of a rip off and it is definitely worthwhile buying the things from another player.