I had around 50 post when I started buying parts off here so I guess it all comes down to seller.
Make sure the seller as a good rating.
Have a look around for what the item cost new then see if your getting a fair deal.
The 1st few times how I paid had was with a International money order from my bank so that person can only bank it then I have them if they don't send it.
Paypal is cheaper and faster to send money but, its header to use.
I only worthship the HP gods 
A false Hp god: Foolish are those who always have wild claim and know fear nothing, yet claim to know everything.