I'm a pure F2P player, can only rely on free, star, daily and quest chest and praying had to get epic item or pieces. Once in awhile there is epic piece for sale in the shop, make sure to grab 1. I have to use what ever most efficient rarity items I can get on hand. I got quite a number of epic items from the past 7 months of play so you just have to be patient if you want to get epic items.
If you need some reference, I sunk a lot of my free time to farm gold and pearls currently have more than 10k battles on my profile.
Tried my best to clear and collect all free chests and quest daily. I use my farmed pearls mostly to rush crew training, to me this is better than spending on premium chest for random item I might not need.
On spending on shop, I only buy the most valuable bundle of parts and maintaining to have at least 1.4 mil on hand to get an epic perks that suits my item.
Current load out using MK5 shooter with epic sniper lv 30, mine lv 20, missle lv 30, napalm lv 27, turbo lv 19. Rare standard cannot lv 40, gear lube lv 26.
Got more that 15 epic items I'm hording in my inventory for future use, will go to them only after my main items got stuck waiting for duplicate.
Hope this is of any help, happy grinding.
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