or...
In 1933 the average wage was 0.68/hr. or $5.43/day. The cheapest Martin was $25 and the spendiest was $200.
It would take you from 4.6 to 36.8 days to pay for them.
1n 2013 the average wage was $23.98/hr. or $191.84/day. The cheapest Martin was $329 and the spendiest was $114,999.
It would take you from 1.7 to 599.5 days to pay for them.