You can buy 1000 PUSHI at http://www.pushiplay.pw/ and setup the MN yourself.
We have a bounty for MN setup guide, it will be ready in next days, but you can try now, is just have a VPS, 1000 PUSHI and few configs.

Some informal MN setup doc at https://github.com/pushiplay/pushi/blob/master/doc/masternode_conf.md