Six orders. One goes out free.

On the desk tonight

One order

0.01 ETH

Orders to a desk

6

Orders per wallet, per desk

2

To order, hold

5,000 $ORDERDESK

Drawn order collects

0.06 ETH

House cut

none

1. Order. Place an order for exactly 0.01 ETH. It takes the next open slot on the desk.
2. The desk closes. The sixth order closes it. A desk that has not filled closes 30 minutes after its first order and is drawn with what it has.
3. The draw. Closing fixes a block 3 ahead, one that does not exist yet. That block's hash draws one order. Nobody picks it.
4. Out free. The drawn order is credited the whole desk. Collect it any time.

order 1  0x51c0…9e2a  0.010
order 2  0x7d13…04b1  0.010
order 3  0xa2f8…71cc  0.010
order 4  0x0e94…b35d  0.010  ← drawn
order 5  0xc6a1…2f07  0.010
order 6  0x3b5e…d8a4  0.010
------------------------------
desk total            0.060
order 4 collects      0.060
order 4 paid          0.010
order 4 net          +0.050
paid by orders 1,2,3,5,6