Quick glance at Microchip shows, all in quantities of 5k units, $1.02-$2.28 per unit for 1Mb ROM, $0.36 for 1Mb flash, (if aiming for $1) $0.96-$1.10 per unit for 16Mb flash, and highest is 64Mbit at $1.95-$2.18 per unit. Memory is cheap if your product is popular or can share a big order with someone(s) else.
Since not a hardware guy, I don't know if PCB design or packaging cost goes up significantly for adding a 1Mb ROM or flash. I doubt it, though, given these kind of memory chips get used in dirt-cheap boards. Albeit with lower amounts of storage usually given those board try to minimize costs.
Since not a hardware guy, I don't know if PCB design or packaging cost goes up significantly for adding a 1Mb ROM or flash. I doubt it, though, given these kind of memory chips get used in dirt-cheap boards. Albeit with lower amounts of storage usually given those board try to minimize costs.