Do you have a chart plotter? If so, you might consider not buying
(expensive) paper charts
With the chart plotter and the excellent sketch charts in the available cruising guides
, paper charts are redundant, at least in my experience. We spent two years cruising from the Spanish Virgins to Grenada
and back several times, and didn't use paper charts at all.
I know that some folks believe that paper charts are essential, but I didn't find that to be the case in this particular cruising area.