I get 3.47 4.12 assuming best case of illuminated road:

1 to trade (-7e, 4 FI)

4 1.33 to dig (-4 FI, 12 CCs)
12 to trade (-12 CCs, 5.5*12=66e)
17 14.33 actions, 59 e = 3.47 4.12epa for the vagabond.