When booking a flight through expedia, they will sell you tickets without important details like baggage allowance. Additionally they will sell you departing and returning flights without important details that do not match, such as being allowed to check a bag on a departing flight, but not bring the bag back home with you on the returning flight. The information is not display anywhere on the expedia website. This is a terrible and rather deceptive user experience. When booking a round trip ticket one would assume that the baggage details of each flight would match up and if they did not that one would be alerted to this fact.
They make you feel like you are getting a good deal on a ticket, when in reality they are scamming you.
In the end I had to purchase a new return ticket that allowed me to bring my bag back home with me. Expedia would not refund my return ticket. So I ended up paying much more.