I added an indicator. The <span>m<br>i<br>n</span> option looked kinda awkward when I tried it out so I went with the slightly less awkward looking option of transform:rotate.
This is not necessarily the end of the conversation. You'll find the relevant html/css at line 417:
Code:
void append_price(buffer page, item doodad) {
if(historical_price(doodad) > 0) {
page.append(to_string(historical_price(doodad), ,"%,d"));
if(historical_price(doodad) == max(autosell_price(doodad) * 2, 100))
page.append('[B][COLOR="blue"]<span style="float:right; transform:rotate(90deg); margin:4px -4px 0 -4px; font-size:10px; color:blue;">min</span>[/COLOR][/B]');
# page.append('<span style="float:right; font-size:10px;">m<br>i<br>n</span>');
}
}
If anyone else has an idea for what they want there, feel free to try it out in place of the bold blue text and report your success here so I can try it myself.