Flea Market Bargains?

If this is not allowed please remove! Today, while on vacation I went to the local flea market. I like to buy while I’m on vacation as it’s much easier here than it is at where I live. I bought 33×90% quarters, a 100g stacker, a 1oz round, and $500 bill (part of the total so I included it, if it’s not allowed please remove). Total for everything was $2086, $231 on the quarters, $140 on the stacker, $1650 on the $500 bill, and $65 on the Eagle round (collector like for me, not value). All from one guy, except the Eagle/Flag round, that was just a piece I like as a collector and bought.

My average cost I figured was around $41.90-$42 an ounce, so my question is did I do alright? And if anyone has knowledge about bill how was that price?