A couple-a things:
1) MSC seems like a great idea!
2) The order book is crossed. There's a BUY 100@.25 and a SELL 100@.2.
3) I want to buy in. Is there a step-by-step guide to how to complete the transaction?
Sometimes there is flash buying going on so a lot of asks get bought in a day or two but occasionally some people don't answer to PM's and their ask orders remain in the books even though the price has already flown past them.
Once you find a buyer (PM someone from the order book) you then should use escrow to facilitate the trade ->
https://docs.google.com/forms/d/1qN17vECkqEl5TVSGWMgod1CCXHCMoRDQCLMEI21fdO4/viewformTo receive mastercoins you just need to give the seller the bitcoin address you want to have those mastercoins sent to.
Remember to use a blockchain.info or bitcoin-Qt wallet! you need either of those to later send a MSC transactions.