Least expensive means of loading module ROMs into a 41?

[Dave Britten]

I currently have a 41CV, along with Math/Stat, Advantage, and X-Func. What's the cheapest option for a casual 41 user to experiment with different module ROM images? Is there anything currently available in the sub-$100 range that would allow loading a few ROM images (even 4 would probably be enough), and maybe provide X-Mem? The 41CL is really cool, but far beyond my needs (and budget justification).

Or should I just buy i41CX+ for my iPhone?