Isopropyl alcohol has a higher affinity for wax and some oils than ethanol does. It also has a higher boiling point and sticks around more readily than ethanol. Using an azeotrope, however, of 87% IPA to water may make it behave a little more like the ethanol azeotrope, but that b.p. and stickyness will still exist. The best option for price may be to use a mixture of ethanol:water:isopropanol, since this effectively combines two binary alcohol:water azeotropes and could be considered a type of denatured ethanol.