1. The purchase price of +1 leather armor is 1000gp (+1 enhancement) +150gp (Masterwork) + 10gp (armor) for a total of 1160gp. The sale price of non-commodities is always 1/2 of the purchase price or in this case 1160gp/2 = 580gp. 2. To create a potion you do the following steps: Feat: Have the appropriate Crafting feat. In this case Brew Potion. Crafting Cost : Spell Level*Caster Level*50/2. In the case of a potion of Cure Light Wounds that is 1*1(minimum)*50/2 = 25gp. If there are any expensive material components those are paid in full (not at half value). All you need to do is pay this crafting cost. (Note: some GM's dislike this form of generic simplicity and may require extra hoops such as specific components. But that is not within the rules.) Spellcraft check (or Craft check if the craft skill is applicable to the type of item) is required. The DC of this check is 5+Caster Level. In the case of a potion of CLW set to caster level 1 that is a DC of 5+1 = 6 Note1: you may set the caster level higher than the minimum needed to cast the spell. This will increase the difficulty and cost appropriately. Note2: you may also increase the DC by +5 in order to halve the crafting time required. Note3: you may also increase the DC by +5 for each prerequisite (such as prerequisite spells) you are missing. However, for Scrolls, Wands, Staves, Potions, and a few other spell trigger items you cannot ignore the spell required. The spell MUST be provided by you, a consumable, or by a friend. Time: Crafting magic items takes 8 hours per 1000gp. Crafting magic potions may be done in 2 hours if the cost is 250gp or less. If it is over 250gp it takes 8 hours. Accelerating the crafting time halves this time required. Regardless of the time required you may only craft one magic item per day. Other: You can only craft for 8 hours per day. You require a safe distraction free environment to craft in. Crafting in an environment that is not safe or distraction free halves the amount of time you get (8 hours work = 4 hours effective work). While adventuring you may craft on the move. However, you only 4hours a day and those 4 hours count as 2 hours effective work. 3. Stepping back: Maybe. It depends on the type of action you are using. If you move then yes. If you take a 5' step, no. 5' step: Cannot be combined with a move, if you move you cannot take a 5' step. If you 5' step you cannot move. If you take a Withdraw action (special type of full-round action that involves movement) then the first square is not threatened and you can leave it without provoking an attack of opportunity. Terminology of 5' step, move, and move action can be confusing so here you go: 5' step: Does not provoke attacks of Opportunity. Cannot be performed any time your movement is impeded (such as difficult terrain). Move: Requires a move action Move Action: Any number of actions one of which is actual movement (move). - Gauss