Lowrance Hook Reveal 5

Purchased this to mount on a jetski. Unit is in great shape and transducer is correct. Upon setting up the unit I tried to find charts in my own fishing area but could not get any detail zooming in. From the product description, the C-Map US/Canada inland and coastal charts should be on this device, but only the inland lakes are loaded. Switched charting to navionics, which is preloaded on this unit, and gained a bit better detail. I did purchase this item used, and it was discounted enough for me to take the risk. It seems like the previous owner bought it, removed the sd card, and returned it, bummer. The issue is, cmap contour is no longer available commercially, Cmap discover is at 125.00 and Cmap reveal is as well at 250.00. (no wonder the previous owner decided to be a scum bag) Prices are nuts, but that's what you get when you "give this item a second chance at life".