I was batch 1 but I didn't get mine until the 3rd shipment of batch 1. I missed the second shipment by 2 minutes (FML). Anyways...

I've been mining since June 26th, but only about 25 full days.

Paid: $2078 US / 0.21379627 BTC  [$9719.533460523 BTC Value @ Time of Purchase]
Import Fees: $65 (USD)
PSU: $40 (USD) - I already had the PSU, but for the sake of break even calculations I'll put it in
Total: $2183 USD

That said, I repurchased my 0.21379627 BTC when BTC was @ $6741 so technically I only paid..

Paid: $1441
Import Fees: $65
PSU: $40
Total: $1546

I've been tracking my profits daily. I calculate breakeven in two ways.

1 - Historical which is based on my average Zen/Day over the last 7 days.
2 - Instant which is based on only the current days Zen/Day.

	@$2183	@$1546
Historical	40 Days	20 days
Instant	34 Days	17 Days

So based on these numbers I will personally breakeven sometime between 8/7 & 8/20 given that I expect my daily profitability to go down. This falls either right before or right as the second batch ships. This can change a lot based on the price of Zen. I've been traveling and haven't had time to figure out if I should switch given the recent reduction in the block reward for miners. Will consider that this weekend.

I should also note that I am using my Z9 Mini to provide heat to my water heaters heat pump which has reduced my daily water heating cost by $0.55 - $0.75 depending on the day, but on average $0.61 / day. So at my electricity rates, the Z9 only costs me $0.40 / day to run.

My Zen/Day has been going down steadily.

Date------	Zen/Day
27-Jun	1.3032
28-Jun	1.3603
29-Jun	1.383
30-Jun	1.4762
1-Jul	1.5212
2-Jul	1.4962
3-Jul	1.4312
4-Jul	1.4921
5-Jul	1.5317
6-Jul	1.5048
7-Jul	1.4721
8-Jul	1.442
9-Jul	1.4814
10-Jul	1.4773
11-Jul	1.4066
12-Jul	1.3858
13-Jul	1.3414
14-Jul	1.3097
15-Jul	1.3306
16-Jul	1.2652
17-Jul	1.2555
18-Jul	1.2519
19-Jul	1.212
20-Jul	1.1556
21-Jul	1.1875