Maximum value back on diners privilege card

[arnabkrmondal]

Want to buy some amazon GV from smartbuy gyftr. Do I get 5X rp upto 4000rp and after the charges paid will my reward value be over 5% if I convert it to airmiles? Having diners privilege card. Any better tricks available?

 

[adldeeps]

Need to revive this thread. Now that Gyftr charges upfront 3% its still worth it for DCB and Infinia. But I am looking for some estimated calculations for Diners Privilege as the upfront 3% is same