Initially back in Jan/Feb I was earning about 2 XMRs per week and I spent well over $1500 for that particular contract. Then when I made more money flipping, and seeing XMR rise from $18-$50 I decided to go all in and upgrade my hashes.
As long as BTC and ETH stay relatively around these prices, I make ~$1750 (BTC) and ~$1100 (ETH)
a week.
I'm not trying promote genesis mining but I can only give you my experience and it seems like if you spend money, that's when you make money.
Here is what one full day of mining looks like after 95% of my hashpower allocated to BTC: