This Excel spreadsheet contains an exhaustive list of all possible point-buy stat arrays. Players can consult this list to see what is possible when using the point buy system. Also included are the total sum of all modifiers for each array, as well as the count of odd and even attribute values (so you can plan for leveling up!).
Some players may find this long list too cumbersome. In that case, we like to provide some random selections to players, then they can choose which of those stat arrays they like best.
If anyone wants to create exhaustive point buy lists for other RPGs, you'll find the SQL query I used to generate the data with some guidance on how to tweak it for your purposes.
Happy character creation!