I am reading the fascinating THE ECONOMIC HISTORY OF BYZANTIUM, available here.
I gather that 1 modios of land was something less than 3000 square metres and for the best land was worth about 1 nomisma. (p. 821).
The price of bread is not known, but is estimated at 5-8 folles per Kg “second quality bread” (p. 829)
As far as I know, the nomisma is the 24 carat solidus, worth 420 folles! Can it really be that you got 3000 m2 of excellent land for 50-80 loafs of bread?! If we adopt Mr De Bernhardy’s estimate in the comments, it would mean the value of land compared to bread is 10 times lower than now in France.
Edit: If we assume an alternate modios mentioned in the comments, it’s 50-80 Kg of bread for 890m^2. This would mean, if we adopt Mr. De Bernardy’s estimate, that the value of land as compared to bread was 3 times lower than now.