Be specific about the target
"Train my slayer" and "get me to 85 slayer for the boss I want to do" are different orders, and only one of them can be checked off unambiguously at the end. Quote the skill and the exact target level, and have the seller confirm it in the order chat before booking.
The other half of the specification is method, and it matters more than people expect. Training a skill the cheap way and the fast way can differ by many days and by a substantial amount of GP in supplies. Agree which you are paying for, and who is buying the supplies.
For buyable skills — herblore, construction, prayer — the supply cost frequently exceeds the service fee. Establish whether the quoted price includes materials or whether you are funding the bank on top, because the difference can be several times the headline number.
Timescales, and what a long booking looks like
A single mid-level skill requirement might be an evening. A 99 in a slow skill is weeks of play. Over that span, the account is in someone else's hands for a long stretch, so agree an update cadence and agree when you can log in yourself without cutting across the work.
Bookings this long are the ones where a clear scope in the order chat earns its keep. The escrow hold sits on the whole amount for the whole job, and disputes over long services almost always come down to what "done" was agreed to mean.
Access and getting the account back
The seller needs your login. They do not need the registration email, and over a multi-week booking that boundary is the difference between lending an account and losing one.
Bank anything you cannot lose before handing over access — for supply-heavy skills you may need to leave materials accessible, so be deliberate about what is reachable and what is not. When the target level is hit, log in, check the level yourself, change your password, and then confirm delivery.
Before you book training
- State the skill and the exact target level, and get it confirmed in the order chat.
- Agree the training method — cheap and slow versus fast and expensive is a real difference.
- Establish whether supplies are included or funded by you on top.
- Agree update frequency and when you may log in yourself.
- Verify the level in game and change your password before confirming.
Worth knowing before you buy
Account sharing breaches Jagex's terms of service, and a long training booking means an extended period where you are not the only person with access. Escrow protects the payment, not the account.