Ferrix it's possible, sometimes I simply x2 because I know it's the norm on the board. But at my table the player prefer rolling twice, thrice of four time. Slower but they seem to prefer it, so it's possible that I forget.
Also who is taking care of the money and the objects.
For those interested: Scrolls, potions and a few wizard,cleric magical object (tome, robe, pearls, wands and so on)can be bought at the university. Except for scrolls they are usually 130-150% of listed price (Jasper and Oculus knows that)
Magical and MW Weapons and armor can be bought at (Oculus knowledge local 13+8) local weaponsmith around the market at 150% listed price or in the industrial sector in a weapon and armor manifacture own by a retired dwarf adventurer. He usually has good prices. Local warrior and adventurer usually buy directly from him. He usually have in stock well renown 100% Mergovian Uberneth armor.
Oculus is also aware of a gnome that usually spend his time at the kobold sailor. He is a magical item broker. If you are lucky or patient enough he can get you any items you want with price ranging from 75% to 1000% listed price depending on the availability.