Eh, it might not be that simple. The dispute will also lock your money for about 10 days, and G2A might ban your paypal/ or ip address. If youre not that experienced and would like some help you could probably hire someone off here to refund it for you for like 10% of the price.
You got the general jist of it
GL
Be careful with agc's
if they reply you'll loose because gift cards aren't covered under Paypal buyer protection
That is pretty much it, but G2A will possibly give fake tracking numbers, or order ids. High chance of it working, not guaranteed. Sometimes G2A don't even reply.
Also not covered under buyer protection. Call up eBay and ask. I actually got scammed on a gift card and called PayPal. Closed the case instantly and said we offer no protection on gift cards