[GoalieAunt]

I think this category comes closest to my suggestion.

My eyes aren't what they used to be and I've always had a problem with breaking down large numbers quickly. If at all possible I'd like to see a comma or space in the numbers in mouseovers. 10 537 or 105 376 or 1 537 549 make it much easier for me to know what I want to sell/buy in the trade warehouse than do 10537 or 105376 or 1537549.