The 6700t is yours if you want it, paypal invoices do not work on my end as it wants a bank account directly connected in order to accept the payment. I just use a credit card, which works on my end for cashing out, and given the horror stories involved with paypal I don't really want any transactions going through between me and them not through a CC.
I still can receive payment as Goods and services and it has shown buyers eligible for protection, as well as several trades confirmed on here of $100+ including a ~$300 video card.
Some people want the invoice, some are fine sending it over goods and services. I am not really sure what the difference is, but it seems the majority of the time people ask for invoices. If you have any problem with that no problem! I meant to detail this out in my post but forgot until you asked me to invoice you