I must admit that I would not buy a ticket advertised on eBay and then trust the seller to change the name, too many things can go wrong there
However, it would appear that a name change can be done and as has already been mentioned, a lot would depend on which airline it is with.
British Airways states the following for their tickets...
3f) Your right to transfer your booking to another passenger where the Package Travel, Package Holidays and Package Tour Regulations apply.
We or
our authorised agents will, if
you ask, issue a new
ticket to somebody else to replace
your ticket if:
-
your ticket has been issued as part of a package to which The Package Travel, Package Holidays and Package Tours Regulations 1992 SI 1992/3288 as amended (the Regulations) apply;
-
you want to transfer
your booking under regulation 10 of the Regulations;
-
you prove to
us or
our authorised agents that
you have satisfied the requirements of regulation 10 and are entitled to transfer the booking;
-
you give
us or
our authorised agents reasonable notice of
your intention to transfer the booking before
your date of departure;
-
you give us or
our authorised agents the full name, address and contact number of the person to whom
you want the new
ticket to be issued;
-
you deliver
your ticket to
us or
our authorised agents and
-
you pay
us or
our authorised agents a reasonable administration fee for issuing the new
ticket.
Exactly what "Regulation 10" is all about, still baffles me as I could not find it during my brief search on BA's website. It may be there (along with the previous 9 and any others) but needs a more thorough search. Unless the ticket is going for something like £50, i.e. money you might be able to afford losing if it is a con, otherwise personally this kind of thing would not appeal to me.