Thank you
which airlines offer for 17.5k o/w tickets?
or 25k round trip ?
What is the equivalent cash value for those points ?
25k round trip in economy you can have AA and, united , I think all airlines.
17.5 k is using Lufthansa miles and more points to book on united. If you don't have Lufthansa miles you can transfer from spg. If you don't have spg. Then your next option is to use 20k Singapore miles that transfer from amex M/R
Regarding the value points vs revenue, you should search what you can get the flights for cash.