This is part of a series of "stocking stuffer" decks using mostly commons and uncommons along with relatively cheap rares for people looking to gift competitive starter-style decks to friends who haven't yet discovered the game. The decks don't use any cards from retail introductory products as part of the goal of these is to encourage people receiving a deck to purchase those starters.
For this deck, the goal is basically to out attack while retaining initiative for enough turns of the game in order to finish before your opponent really ever has the chance to catch you. Sabine is one of the best leaders in the game, and even with this budget deck a new opponent can catch a seasoned one expecting traditional high dollar cards like Poe and Darksaber completely off-guard.
As added flavor, this deck plays just as well (and sometimes better) with Leia leading from an Aggression base.
Adding money to the deck: I've already mentioned Poe and Darksaber as strong replacements, but along with those you can also make the following changes to add even more value:
Guerilla Attack Pod x3 --------------> Poe Dameron x3
Adelphi Patrol Wing x2 -------------> Wrecker x2
Admiral Ackbar x 2 ------------------> Aalya Secura x2