It doesn't look like much but these treasure rushes happened ever 2-3 days or so. The tier 5 cities like Trenton, pay the least in terms of rewards but even for place where I did in the top 50 I still won 2,000 upx and 0.01 spark as a prize so overall it was definitely worth the trip and the fact that I am able to place in these treasure rush events more often than not has started to become a nice little supplement of earnings to my usual earnings in properties, spark rentals, visitors and layer 2. I struggle to really pull much in for rewards in competitive player but this seems to be an area that I've gotten to be pretty good at.