@client.command(name='updatePrice',aliases= ['up'], pass_context=True)
async def update_price(ctx, item: str, quantity: float):
if (ctx.message.author.id in adminUsers):
    item = item.replace(" ", "").lower()
    with open(CONFIG, 'r+') as f:
        data = json.load(f)
        try:
            items[item] = quantity
            data['items'] = items
            f.seek(0)
            json.dump(data, f, indent=4)
            f.truncate()
            await client.say('{item} price updated'.format(item = item))
        except KeyError:
            await client.say('No match found for ' + item)
else:
    await client.say('You are not permitted to update item prices')