Regarding 20 usd / 50 usd tier (Patreon)

So I have a hard time keeping up with the 20/50 usd rewards each month. I need to raise the tier reward cuz in giving a 70/100 usd worth piece for 20/50. I'd leave a 20 usd for those who have it but don't request the sketch (thank you so much) 

I'll put a list of prices for you to vote if you think they're reasonable. 

I've been a bit scared to change this for a while cuz this is my most popular tier and I'd I lost a lot of patreons I might struggle a lot XD but I can't just continue like this. The level of stress are huge 😭