I don't know what they charge for preseason at Lambeau. Whatever it is they do benefit from the fact it is impossible to get tickets to regular season games without paying a hefty premium meaning many non-ST fans will gobble up the preseason games as being their only decent chance of seeing them live. They may stand a reasonable chance of stumbling across a freebie or deal from a ST holder they know who has little interest in preseason games. Looking at Ticketmaster for their 2 preseason games the few tickets available are all resale seats. Many are priced quite reasonably even at resale. Top price is $150 for a ducat on the 30 yard line 27 rows up. Based on that it's hard to see US based Packer fans outside of a relatively short driving radius of Winnipeg being willing to shell out the ask at IGF.
https://www1.ticketmaster.com/event/070 ... LINK_GAME1