Buying out new ships

So I've had my collection since 2018 with the last addition me and my dad made was back in 2021. Now that me and him are getting back into playing it more often, how do we get new ships to add to our game? Any tips or best sites to check out that are trustworthy?

X-Wing Swap and Sell on Facebook, Discord Buy and Sell channels in their servers, ebay is what I recommend! So happy to have you both!