Howdy, because of this forum, for some time now, I have been an owner of some Vanguard 500 Index Fund Admiral shares. My question is: considering that the expense ratio of this particular index fund is 0.04%, is there a minimum recommended purchase amount? Is the expense ratio even matter in this regard as there is no purchase fee for this index fund? For example, I sell some of my unwanted possessions on Craigslist and make a few dollars. Would it make sense to buy stocks with it immediately (especially if the stock value is low that day) or is there any reason to wait until I have more money saved up for buying shares? I prefer to buy shares immediately, because the extra money tends to end up being converted into other possessions that I don't need. Thank you!