\documentclass[pagesize, ngerman, fontsize=12pt]{scrartcl}
\usepackage[T1]{fontenc}\usepackage[utf8]{inputenc}
\usepackage{babel, comment, array, booktabs}

%% WJH 21 Apr 2012: numprint defines the "n" column type
%% WJH: The autolanguage option will take the language from the document
\usepackage[autolanguage]{numprint}

\title{Sicherheitsbestellung}
\subtitle{gag}
\begin{document}
\maketitle

% WJH: n{6}{2} means 6 digits before and 2 digits after the decimal separator
\begin{tabular}{p{0.25\linewidth}n{6}{2}}%\toprule
Bezeichnung & {Betrag} \\ % WJH: normal text in a "n" column must be in braces to avoid being in math mode
% BEGIN RECEIVE ORGTBL Kaufpreis
Kaufpreis & 100000.00 \\
Darlehen & -5000.00 \\
Summe & 95000.00 \\
% END RECEIVE ORGTBL Kaufpreis
\bottomrule
\end{tabular}
\begin{comment}
#+ORGTBL: SEND Kaufpreis orgtbl-to-latex :splice t :skip 0
| Kaufpreis | 100000.00 |
| Darlehen | -5000.00 |
| Summe | 95000.00 |
#+TBLFM: @3$2=@1$2+@2$2;%.2f

\end{comment}
\end{document}
