Components for this GPS board have been selected. It is viewable here from Octopart. The current price for the board components sourced from DigiKey is 8.33 USD. Keep in mind that the GPS module is not currently considered in that price, as it is not yet available at any major distributor. It is only available from u-blox, as an engineering sample, as of 12/28/19. U-blox lists price breaks as 1-9 pieces at 25 USD, 20-49 pieces at 21.56 USD, 50-99 pieces at 17.67 USD, and 100-249 pieces at 14.15 USD. I'm going to guess that similar prices will become available at DigiKey, Mouser, etc. once the module is ready for commercial release.