Just got the SR. Used 10x glasses + 7x R Gacha Ticket. I think it was 4th try with this combo (it's the same as 10 R Gacha + 7 Glasses, I just had way more glasses, so I swapped the numbers).

Finally done with this set of cards. Total resources used to get all 3 of them:
- 90-100 R Gacha Ticket
- 65 Glasses

Quick summary of the limited cards obtained:
- 1x SR - 10x Glasses + 7x R Gacha Ticket - Wait time 4h
- 1x N - 1x Glasses - Wait time 50m
- 9x R - This thing pops from nearly everything

Good luck.