Yeah that's outrageous. Instead of getting a semi flexible plan for $1800, you can pick 13 games of your choice for half the price. The marketing for this team is clueless. Its a suckers deal to buy one of these plans. Unless you want the playoff priority I guess.
Looking at the three packages, Weekday Plan looks like the weakest. Otherwise the other two plans feature games that are typically expensive on the secondary market. When the team is doing pretty decent, tickets for games like Chicago, New York, Detroit, Pittsburgh, Philly, LA, and Boston are hard to come by for less than 50-60 (and more). Bandwagon effect, I guess?
Also, you'd be surprised how many people "just don't use" StubHub/secondary market. People above a certain age, parents with kids, etc... I sold a couple games last season that I couldn't make it to (one of which was LA Kings, for example), and sold it at the price printed on the ticket, which is obviously higher. My buddy bought the two tickets, and thanked me a million times because he a) doesn't use StubHub (but I even checked, and prices on StubHub were pretty high for the Kings game), and b) trying to buy them on TicketMaster, there were only tickets in the 60-70s range. Many people/demographics just don't go to the secondary market for whatever reason.