overage-options

name	overage-options
description	Price every way out of being over the baggage allowance — prepaid extra bag, airport excess, overweight bands, cabin-bag upsell, fare upgrade, shipping the difference, or leaving it — and recommend the cheapest that actually works for this itinerary. Use when the user is over their allowance, asks what excess baggage will cost, or asks whether to pay for another bag. Writes overage.md.
allowed-tools	Read, Write, Edit, Bash(python3 *), WebFetch, WebSearch, Grep, Glob

Overage Options

Being over the allowance is a purchasing decision under time pressure, and it is routinely made badly at the desk because nobody has the numbers. This skill produces the numbers before the airport.

The options, in the order they are usually worth checking

1. Prepay online before departure. Almost always the cheapest way to add a bag, frequently half the airport price, and it is the option that disappears — most carriers close online bag purchase somewhere between 24 hours and 1 hour before departure. Find the actual cutoff for this carrier and state it as a deadline with a date and time, because it is the only option on this list with an expiry.

2. Redistribute instead of paying. Before pricing anything: is the itinerary over in total, or over on one bag? A 26 kg bag beside a 19 kg bag under a piece concept costs an overweight fee for nothing. Run /travel-packing:plan first. Under a weight concept, redistribution buys nothing at all and this step is skipped — which is why the piece-vs-weight determination in allowances.yaml matters here.

3. Overweight band vs an extra piece. Two different fees. On many carriers a second checked bag costs less than the overweight surcharge on the first, which means the cheapest fix for a 28 kg bag is to buy a bag and move 5 kg into it — and the traveller needs a spare bag to do it, so this has to be decided at home. Compare explicitly, both directions.

4. Cabin upsell. On carriers whose cheap fares exclude a cabin bag, adding one is often the cheapest kilogram available, and it moves weight the checked scale never sees.

5. Fare or cabin upgrade. Occasionally the fare-brand step up (which includes bags) costs less than buying the bags separately, especially where two travellers are each paying. Check it when the bag fees get into that range; do not check it reflexively.

6. Ship it. Post or courier the excess to the destination. Real comparison, not a throwaway suggestion — it is frequently cheaper per kilogram than airline excess, especially for non-urgent bulk. Price it properly: service, transit time against the trip dates, customs exposure on the value being shipped, and whether anyone will be at the destination address to receive it. A parcel that arrives after the traveller leaves is not a saving.

7. Wear it. Coats, boots, loaded jacket pockets. Free, immediate, socially normal, and worth a few kilograms. Always mention it; never present it as the whole answer.

8. Leave it. /travel-packing:leave-behind ranks what to drop. This is the option that gets chosen by default at the desk when none of the others were prepared.

Getting the prices right

• Fees are per segment or per journey depending on the carrier and whether bags are through-checked. Getting this wrong is a factor-of-two error. State which applies and where you read it.
• Fees are quoted in the point-of-sale currency. Convert to the user's currency with an FX source (mcp__gateway__fx__convert where available), and show both — the amount they will be asked for is the local one.
• The same escalation ladder as policy research applies to fetching fee tables: WebFetch first, then a residential-egress server-side fetch, then a browser, then ask the user to paste. Excess-fee pages are among the most aggressively geo-varied pages an airline serves.
• Record the source and date for every fee, exactly as in allowances.yaml. A fee schedule from a blog post is not a price.

Output

Write overage.md in the workspace containing:

1. The shortfall, in kilograms, per bag and in total, stated first.
2. A costed table: option, what it takes, cost in local currency and the user's, deadline if any, and whether it requires anything the user does not already have (a spare bag, a scale, someone at the destination).
3. A recommendation — one option, named, with the reason in a sentence, and the runner-up. Make the call; do not hand back a menu.
4. The decision deadline, as an absolute date and time: the earliest cutoff among the options worth keeping open.

Then say the one thing that is easy to miss: if the excess is being paid anyway, the marginal kilogram is usually free up to the next band, so there is no reason to leave things behind once the fee is committed.