So if any of your friends or yourself is planning to go Japan, perhaps you could check out this lovely pan at their departmental stores such as Tokyo Hands (kitchenware section) for less than SG$30.00
But if shape is your main concern, you can easily grab any metal chiffon tin at any of the local baking ingredients shops mentioned above. The price range from SG$6+ to S$20+ depending on the size and material made. I have 3 chiffon tins in total which are 2 rounds and a heartshape from size 15cm and 20cm.
SG$2.00 for two 15cm (wide) paper cases or you can get five 12cm paper case from Phoon Huat at less than SG$3.00.
With a desire tin, you can try to make any of these chiffon cake recipes featured below.