Similar to bug 10792, the fund amounts (total allocated, base-level allocated, base-level spent, total sublevels spent, and base-level remaining) in the table on the admin/aqbudgets.pl page sort alphabetically, not numerically.
A rough WIP set of patches can be found at the tip of http://git.librarypolice.com/?p=koha-galen.git;a=shortlog;h=refs/heads/format_currency The general idea is to (a) consolidate code that formats currency amounts and (b) have the actual formatting be invoked by a Template Toolkit filter in all cases except (for the moment) the PDF order basket generator. This approach can trivially be extended to allow monetary amounts to be displayed consistently in circulation as well. Comments welcome.
This is invalid since bug 11578 has been pushed (the columns are not sortable anymore).