I'm often faced with the following problem: I play in orchestral tuning but have a piece I want to play (e.g. Hindemith sonata) that is written for solo tuning. I don't want to re-tune my bass and can't afford the time/money of switching to a set of solo strings (which I think sound much better than an orchestral set ratcheted up a notch) just to play a few pieces. So what do I do?
For Bottesini's Elegy, there is a Frank Proto edition in which he includes two piano scores: one to accompany each of a bassist in orchestral and solo tuning. This seems to me like a great solution. Well, I just cam across Douglas Mapp Music which offers piano transcriptions for many of the pieces in the repetoire. The pieces look good and seem, to me, reasonably priced.
I'll let you know how my first order goes.