I was looking at a flight to Oz.
Summary : Aegean have a flight, but they have no information on baggage allowance, or extra baggage costs, or special baggage costs - not on their site, and not after a week of talking to customer support. You are expected to roll up on the day, to the airport, pay the inflated on-the-day prices, and only find out what they are when you actually turn up (and I suspect the bike alone will cost more than the ticket, about 1000 USD vs 800 USD for the ticket). You also cannot notify Aegean you are bringing a bike, so they can deny you boarding.
The full story;
The flight has three classes - Saver, Flex, Business.
I look at the baggage info page.
There are three classes - Flex GoLight, Flex and Business.
Is Flex the same as Saver?
There are three distance catagories - domestic, short international, long international. Each lists the countries in the category. Australia isn't listed.
I contact customer service. I explain the information is not on the site and I ask - "Is Saver the same as Flex? what's the baggage allowance, and how much is extra baggage and how much is a bike?"
First reply is an automatic, I think - it's a boilerplate with the baggage info URLs.
I reply and explain again, briefly.
A human replies : "you can only pay for luggage at the gate on the day".
Which doesn't answer the first question about classes, the second question about allowance, or the third question about prices. It also implies paying the typically double cost you pay on the day.
This goes on for about a week. (Support try to weasal out of it a couple of times - "don't email us, try calling! they'll tell you" (I did try it at one point - I was told the allowance was 1 bag of 35kg, which makes no sense since the maximum baggage weight is 32kg, and they still didn't know prices) and also "we can't tell you unless you booked the ticket already so we know the ticket class and destination".)
I still don't know any of the answers. I have of course now booked a different flight.
I think basically because it's a code-share, Aegean know nothing about prices or allowances, and you can't find out by calling the other airline, because the ticket is sold through Aegean.
So the deal is this : you buy the ticket, you leave your hotel/airbnb/etc, book one in the destinaton country, roll up to the airport and THEN we tell you much how it will all cost.
Aegean are freaking insane.
There's one extra thing - you are instructed to inform the airline in advance that you are bringing a bike. If you do not, they can deny boarding. You can't tell them you're bringing a bike.
As an aside, bike costs fall into two catagories. There are airlines which charge a flat rate (say, 250 euro to Oz) and there are airlines which consider it normal luggage and charge only for the extra weight. For a long distance trip, you're looking at say 40 USD per extra kilo, and that's 25 kilos. So your basic ticket for you - 90kg and 23kg of luggage is say 800 USD, and then your bike (25 kg) is 1000 USD.