Help with TRS

Hi was wondering if any one can help

I just purchased 2 ipad minis from Myers parramatta and realised that the TRS rules have changed in that you don't need one tax invoice over 300. it can be over a number of transactions

On their FAQ: it states

"You may purchase several lower-priced items from the one store, either at the one time or over several occasions within the 60 day period, provided the total purchases amounts to $300 (GST inclusive) or more."

I have also purchased somethign $100 ish dollars from Myer in the City. Can I claim that with the ipad as both are Myer or they must be the same physical store as well?

I just can't figure out the difinition of 'the one store', the same physical store or the same store but different branch

Does anyone know?

Thanks