SO-style Markups for References in the Bottom of the Page in Bibtex-ed Document?

Question

I often have a long bibliography and then later I find that I should have a notice like this buying-list in a project (not that important so not wanting them to the bibtex). I find it overkill to explain a trivia like a buying-list-notice next to more important things in Bibtex, I need just SO-style references. How can I add the references nicely to the bottom of the page instead of the back with author/howpublished/title-bibtex-clutter? I am not against Bibtex but I am looking for more casual referencing besides Bibtex.

\begin{itemize}
\item 4pcs [1] (24USD)  % Here [1] and [2] are references to 
\item 2pcs [2] (25USD)  % the below thing with the urls.
\item ...
\end{itemize}

<<echo=FALSE>>   % I am not sure about the parameters here but they 
                 % but they could be things like fonts etc.
                 %
                 % I want here a Sweave-like -tool
                 % for easy mark-up references that will
                 % automatically appear at the bottom of the page.
                 % Then just latexmk to handle compiling?
[1]: http://www.something.com/buyThis/XYZmoment
[2]: http://www.hello.com/notImportantButForTheFuture/GoodToKnowWhereToBuy
%

Answer 1

I think footnotes would work, but I'm not sure if I'm missing something:

\documentclass[a5paper,12pt]{article} % paper and font chosen to make screenshot smaller
\usepackage{hyperref}
\begin{document}
\begin{itemize}
\item 4pcs \footnote{\url{http://www.something.com/buyThis/XYZmoment}} (24USD)
\item 2pcs \footnote{\url{http://www.hello.com/notImportantButForTheFuture/GoodToKnowWhereToBuy}} (25USD)
\end{itemize}
\end{document}

Answer 2

Here is an implementation that uses its own counter shorturl to typeset these per-page references as part of the footnotes on the page:

\documentclass{article}
\usepackage[paperheight=200pt]{geometry}% http://ctan.org/pkg/geometry
  % The above paperheight configuration is just for this example
\usepackage{url}% http://ctan.org/pkg/url
\usepackage{perpage}% http://ctan.org/pkg/perpage
\MakePerPage{shorturl}% shorturl counter will reset every page
\newcounter{shorturl}\renewcommand{\theshorturl}{\arabic{shorturl}}%
\makeatletter
\newcommand{\shorturl}[1]{%
  \refstepcounter{shorturl}%
  \hbox{\normalfont[\theshorturl]}%
  \insert\footins{%
    \reset@font\footnotesize
    \interlinepenalty\interfootnotelinepenalty
    \splittopskip\footnotesep
    \splitmaxdepth \dp\strutbox \floatingpenalty \@MM
    \hsize\columnwidth \@parboxrestore
    \protected@edef\@currentlabel{%
       \csname p@shorturl\endcsname\theshorturl
    }%
    \color@begingroup
      \par\makebox[1.8em][r]{[\theshorturl]:\ }%
        \rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox%
    \color@endgroup}%
}
\makeatother

\begin{document}
\begin{itemize}
  \item Some information\footnote{Here is a footnote.}
  \item 4pcs \shorturl{\url{http://www.something.com/buyThis/XYZmoment}} (24USD)
  \item 2pcs \shorturl{\url{http://www.hello.com/notImportantButForTheFuture/GoodToKnowWhereToBuy}} (24USD)
  \item Something else\footnote{This is another footnote.}
\end{itemize}
\end{document}

Loading perpage makes the \shorturl references restart every page. Remove this if it is of no concern. It would be possible to modify the layout of the URL in the footnote. At the moment, the \shorturl mark within the footnote is right-aligned in a 1.8em box (similar to that of the regular \footnote).

geometry was just loaded to make the text and footnote be visible/close together.