Fair catch on the 200 milestone. The gap between each one was doubling (15, 25, 50, 100), so that last jump cost something like 6.7 quadrillion times the base price. Not a grind, a wall. Dropped it to 130 instead, same first three thresholds, should actually be reachable now.
Export's in too, for both this and Dig To Australia. Little save icon bottom right, copy a code or download it as a file, paste or upload it back on any device.