@daphnis: but consider, the low, low cost of ~$150 would be going to Faber and not U-E (bad luck for any royalties for Rudolf Barshai).
Two sets of facsimile copies of the Mahler sketches have been released. The first was a set published by the company of Paul Zsolnay, which gave the principal sketches, printed on an almost exactly reproduced series of folios and bifolios:
Movement 1 (Adagio) draft full score;
Movement 1 short score;
Movement 2 (Scherzo 1) draft full score;
Movement 3 (Purgatorio) draft full score;
Movement 3 short score;
Movement 4 (Scherzo 2) short score;
Movement 5 (Finale) short score; and
8 pages of miscellaneous sketch pages.
For instance, the draft full score of movement 1 consists of a double sheet (bifolio) as an outer folder, with 8 further bifolios inside; Mahler wrote on each side of these 8 sheets except for the last, so resulting in a continuous 31-page orchestral score of 279 bars; movement 2 is similar except Mahler ran to all but the last side of 10 bifolios, thus a continuous 39-page orchestral score of 522 bars. The draft full score of the Purgatorio is only 30 bars long, but there is enough material in the short score and 1 page of sketches to fashion a movement, albeit an uncharacteristically short one for Mahler, as most of the final section is given as a "da capo" with a short coda. The full score drafts are all one system to a page: 18 or 20 staves, in landscape format. The short score, sketches, and inserts are usually multiple systems per page.
The Zsolnay set accounted for most of the principal material, but significantly left many pages unpublished: in particular, the short score for movement 2, which is essential to any attempt at completion of it, since the draft full score is much patchier than either the first movement, or even the 30 bars of movement 3. (This may have some bearing on why the "Jokl" edition, i.e. Křenek's version, consists only of these two movements; even Cooke found it a considerable amount of work to do his completion of movement 2.) To address this shortcoming the International Gustav Mahler Society funded another publication including all of the pages produced by Zsolnay as well as most of the remaining short score, sketches, inserts and other pages; however, besides being of a slightly lesser quality in terms of printing, three or so pages of manuscript escaped inclusion in the set. These pages however appear in facsimile in the preface of the final version of Cooke's performing edition!
The University of Melbourne (where I work) has a copy of the Zsolnay set in the Hanson-Dyer Music Library, which used to be available for staff loan – so you can imagine I availed myself of the opportunity! They are now unfortunately included in the reserve collection, not to be loaned out!
Apparently U-E are looking for sponsors to underwrite publishing a complete set of typeset versions of all of the above:
http://www.gustav-mahler.org/gesamtausg ... chau-e.cfm
This would be functionally equivalent to what you asked, i.e. a typeset score, minus any attempt at completion