I extended memory in my Mac Plus to 4MB for about $5 a few months ago. Nowadays, when anything marked with the "retrocomputing" label can be ridiculously expens

I extended memory in my Mac Plus to 4MB for about $5 a few months ago. Nowadays, when anything marked with the "retrocomputing" label can be ridiculously expensive, this kind of 30-pin SIMM memory is still considered as obsolete, not classic.