Paypal 45 day buyer protection ends on August 2nd.

Hopefully Terrahash receives Avalon chips in mid July, but based on Avalon's track record, the chips will likely be late leaving Terrahash buyers in limbo.

Terrahash promised to ship boards within two weeks of receiving Avalon chips, so the clock really doesn't start ticking and they haven't broken any promises unless they don't ship within two weeks of receiving the chips.