Safest way to pay for Shpock item: Goods or Services or Invoice?

[mslandon9]

So which is the safest as there are two ways of doing this? There's no info given by Shpock at all, just 'use paypal'.

1. Send the seller a payment under 'Pay for Goods & Services'. There is no option here to add details on the item/condition/delivery cost etc.

 or

2. Get the seller to send an invoice. Here you can ask them to add details of what you are buying i.e the same description of the goods in their Shpock advert.

Anyone? 

[kernowlass]

@mslandon9

2