If you don't want to mine yourself, you can trade mining capacity by the gigahash at https://cex.io/

I personally have just dipped a toe in the mining water with a 30GH miner I got from butterflylabs before the prices went up. Looks like, if the BTC price maintains these levels, it'll be pretty profitable. Would have been much more marginal if I'd paid the new prices. The new monarch cards look good, but again, with butterflylabs you never know when stuff will get delivered - the backlog on the first gen ASICs like mine was terrible - I waited about 9 months for delivery to the UK.