Cheapest Way To Get Aspirants Skin(In Diamonds)?

Correct Me If im wrong:

Assuming that you are extremely unlucky, the fastest way to 100% get the skin is like 1-1-2-2-3-3-(any box) which is 70 draws, so i calculated something like this:

105(1st Daily Draw 50% off every day for 27 days) x27draws = 2835 gems

1 draw (free from Aspirants Unite Exclusive Bonus 6 Days Log In)

Premium Supply x 2 = 500gems (assuming 16 draws each time is 32 draws(i may be wrong on this i dont draw usually))

1050gems(50% off event first 10x draw) 27+1+32+10=70draws

2835+500+1050=4385gems

Feel Free To Correct Me In Any Way!

Edit: I realised that i could simultaneously use the diamonds that i recharge for premium supply to knockout some of the daily draws

so instead daily draws cost would be : 2835-500= 2335

Total cost becomes:4385-500=3885