Having one section, open.

Yep!

Based on your description, the distribution was correct.
Saying it is a higher prize is a little clearer than saying it is a higher class. If it was an expert prize and a class-A prize (instead of two different under prizes) then the A player would have brought in the A prize (and if the expert prize was $5 greater than the A prize then the A prize would still have been what the A player brought into the mix).

The distribution is correct. When a player could win multiple under X pizes of equal value, s/he wins the prize for the greater or greatest value of X. As others mentioned, small differences in the value of each prize can avoid this circumstance, as can use of class prizes instead of under prizes, but both of these have potential drawbacks as well. Pick what works best for you.

While it may be obvious, the rationale for ranking an “under 2200” prize over an “under 2000” prize of an equal amount is that more players are eligible for the former. So, having the highest score among all players in the event rated under 2200 is a more significant accomplishment than having the highest score among all players in the event rated under 2000.

Note that this logic applies to “under” prizes, not to “class” prizes. Class prizes are for disjoint rating classes (e.g., “top expert” applies to players rated between 2000 and 2199, inclusive). One does very well to be careful with terminology, using “class” and “under” to describe rating-restricted prizes correctly.

Also, although it wasn’t asked, I’ll take the opportunity to remind readers that unrated players are not eligible for “under” prizes unless the prize explicitly states otherwise. Many players think that, because they are unrated, their rating is zero and they should therefore be eligible for all “under” prizes. That is not true; “unrated” means “has no rating number whatsoever,” so the player has no number to compare against the upper limit for the prize. If unrated players are eligible for an under prize, describe the prize as (for example) “under 1200/unrated” (or “under 1200/unr”, using a common abbreviation for “unrated”).

Thanks. I thought this exercise would by informative for our budding TD. It certainly illustrates some issues - and shows why multiple sections can be easier if you have enough players. And why quads, hexes and octagonals are good options.

Mulfish, you are absolutely correct here. I love this thread, and
do wish to see more of it. Whatever we can do to make the
starting process easier we need to at least examine.

Rob Jones