If you're shopping for a Mythic+ carry, the first question on your mind is usually the simplest one: when will it actually be done? The honest answer is that timing depends on the key level, the group setup, and the realities of how the keystone system works. A good seller can give you a tight window. A seller promising "instant" delivery is usually counting on you not knowing how the dungeon clock works. Here's a realistic breakdown so you can judge any offer with confidence.

The Baseline: How Long One M+ Run Actually Takes

Every Mythic+ dungeon has a timer built into the keystone, generally in the 30 to 35 minute range depending on the dungeon. That timer is the floor, not the ceiling. A clean, in-time run on a lower key might wrap in 22 to 28 minutes. A higher key where the group plays carefully to avoid deaths can eat the full timer or slightly more.

So before anyone factors in coordination or your own readiness, a single completed dungeon realistically costs 25 to 40 minutes of actual play time. Any timeline you're quoted should respect that basic math. If it doesn't, that's your first red flag.

ETA Expectations by Key Level

Higher keys aren't just harder, they take longer because the group pulls smaller, plays more deliberately, and can't afford sloppy deaths. Here's a sensible per-run range, assuming an experienced team:

  • +10 to +12: Comfortable territory for a strong group. Expect roughly 25 to 35 minutes per dungeon, usually timed without much drama.
  • +13 to +15: The pace tightens. Routes matter, and one bad pull can cost the timer. Plan for 30 to 40 minutes per run, with the occasional reset if a key depletes.
  • +16 to +18: Execution has to be near-perfect. Runs more often take the full timer, and a wiped attempt can mean starting the dungeon over. A single key at this level can realistically swallow an hour once you count a failed pull or two.
  • +19 to +20: This is high-end push territory. Even top players reset, re-route, and retry. Scheduling around a coordinated team is often the real bottleneck, not the run itself.

Notice the pattern: the difficulty climbs, but so does the variance. That's why an honest Mythic+ boost listing quotes a window, not a stopwatch number.

What Actually Affects Your Timeline

The key level is only one input. Several other factors swing the real delivery time:

Scheduling and team availability

A self-play run (where you're in the group) has to wait until you and the boosters are online together. A piloted carry can start sooner because the team controls the schedule, but they still coordinate four or five players. Time zones and team load are usually the biggest delay, not the dungeon.

Key depletion and resets

If a group misses the timer, the keystone drops a level and the dungeon may need a rerun. Good teams build this into their estimate. It's normal, not a failure, and it's exactly why a padded, honest window beats a fantasy promise.

Run count and loot goals

One timed +15 for the weekly is quick. A full set of eight dungeons, or repeated runs chasing specific loot, multiplies everything. Be clear about whether you want a single key or a batch so the ETA matches reality.

Game state

Server maintenance, affix weeks, and patch timing all shift difficulty and availability. A seller who knows the current affix rotation will give you a sharper estimate than one quoting a flat number year-round.

Why "Instant" and "Guaranteed in Minutes" Are Red Flags

No one can complete a 30-minute-timer dungeon in five minutes. The mechanics simply don't allow it. When a listing screams instant delivery on a high key, one of a few things is happening: they mean instant start (not completion) and are blurring the difference, they're overselling to win the click, or they don't actually run keys at that level and will stall once you've paid.

Trustworthy timing language sounds boring on purpose: "we begin within X hours, single key typically completes in 30 to 50 minutes, full batch over one or two sessions." That's the voice of someone who's actually run the content. Pair that with clear communication during the run and you've found a seller worth your money. The same honesty test applies to other services too, whether it's a raid clear, a gold purchase, or a leveling carry: real timelines have ranges and caveats.

When Buying a Boost Actually Makes Sense

This is a time-versus-money decision, not a status one. If grinding pugs for a timed +15 costs you several frustrating evenings of failed groups, and a clean Mythic+ boost gets it done in under an hour of scheduled play, the trade can be very fair, especially when your free time is scarce. If you genuinely enjoy the grind and have the hours, doing it yourself is its own reward and costs nothing but time.

The right move is to know the realistic clock before you pay. Expect a window, not a miracle. Ask how the seller handles depletion and resets. And treat any "instant" promise on a high key as a reason to keep looking. Once you understand the timing, you can buy with your eyes open and actually get what you paid for.