Save several hundred dollars over what? Other computers that are several hundred dollars more? Yeah, sure. Over some other computers that are just as good? Not so much.
The Oceanic Geo 2.0 is a nice computer in a size that I personally think is much nicer than the size of the Puck or the DG03. It is normally found for $349, so the Puck is definitely not going to save "several hundred dollars" over that. And, it's pretty common to find the Geo for $279. It would probably only take one phone call or email to LeisurePro to get it for significantly less than $349.
The Geo is a smaller overall size than the Puck, but that doesn't mean the actual writing on the display is much, if any smaller. And the Geo offers the user a choice of two algorithms. One of which is roughly comparable to the Puck algorithm, and the other will offer the user longer NDL times. Longer NDL times are very nice when you either have a good SAC/RMV or when you use bigger tanks like 100s or 120s. Either way, you run out of NDL before you run out of gas, so a longer NDL means you get more time underwater.