Cool that masternode limit is now lower. What is the payout for a masternode?
Full details of the masternode are yet to be revealed, Devs have just informed of the revised amount for now

Well, in fact, we have everything we need to know to calculate masternode profits in STAK.
1. Collateral is 15k per node.
2. Block is 1 minute; blockreward is 9.5 STAK; rewards started at block 10081.
3. Node rewards start at block 50040, and for first months they will be 60% of blockreward, so 5.7 STAK per block going to nodes, or 8208 STAK per day for nodes.
4. At block 50040 there will be 39960 blocks mined with reward of 9.5 STAK, so 379 620 STAK in circulation, or 25 masternodes
if supply fully locked.
There is also dev premine and swap reserve, total of 41 250 000 STAK. Devs will not use these funds directly to set up nodes, confirmed.
Soooo... if we have 25 masternodes at start, each node will earn 328 STAK per day minimum. If only 50% of mined supply will be locked in nodes, we are looking at 650+ STAK per day per node.
We don't know market price of STAK yet, but considering numbers above, STRAKS masternode will be very profitable and that profit will be long-lasting.