Here is a link to a crowd-funding proposal for a Boeing 737-100 in 1/72.
http://s15.zetaboards.com/72nd_Aircraft ... 463/1/#new
The idea is to 3D print it with all the advantages and disadvantages of that technology.
If you buy in at the funding stage you end up with a model, assuming it goes ahead. It is possible to purchase one after the development process but it will cost rather more.
Another advantage of being part of the process is that you can have design input and feel for yourself the post release angst at why it is unbuildable.
The 737 is a bit large for me but I am participating in an earlier proposal.