With my very cheap package (International Basic for $15 per month) I do not get any of the Hallmark channels, except for when they are in free preview. (International Basic also requires that another International package be added. The cheapest qualifying package that I have found is Portuguese: RTPI for $9.99 per month.) I do not subscribe to the Heartland Package, but I can add it for $6 per month if I wish. So, the cheapest way to get all three Hallmark channels from Dish is:
International Basic ($15) + Portuguese: RTPI ($9.99) + Heartland Package ($6) = $30.99 per month
This is the same price that grandfathered Welcome Pack subscribers pay (for just Hallmark and HM&M, not Hallmark Drama).
Non-grandfathered Welcome Pack subscribers would pay $34.99 per month for the same channels.
Either way, add $6 to the price of Welcome Pack to get Hallmark Drama in the Heartland Package. (So, $36.99 per month or $40.99 per month, depending on when you signed up for Welcome Pack.)