Talk to the dwarf near the entrance of the mining guild to retrieve your skillcape.
Chat with our AI personalities
99k if u have 99 in that skill.
Yes, you have to be a member to obtain ANY skill capes in Runescape. Skill capes were intended to be made for recognizing members who reached level 99 in a skill, not really for non-members. Although, a common trick to obtain the skill cape while not cracking your budget, is to get a 1 month subscription to runescape, buy the skill cape, equip it to your character, and never take it off again. If you take it off, you can't put it back on once your membership is depleted. Although, this was a relatively old trick and I do not know if this still works.
They are the same, however the Strength Skill Cape is classed more of status and cheaps the Obsidian Cape, and when you earn you next skill cape, all skill capes will be Trimmed giving you a +4 Prayer Bonus, this is something Obsidian Cape doesn't have.
Firemaking, though it is very time consuming, it is officially the most cheapest skill cape there is available, only to Quest Cape ( Which isn't even classed as a skill cape ).
There are many level 3 accounts with a Slayer cape.