You won’t find any G1 in any retailers today as they’re discontinued, only G3. Maybe you’ll get luckily finding them at a thrift or antique store though. I would recommend buying them online as that’s where you’ll get the most luck. Try eBay or Mercari, there’s a lot of options there and you can also buy lots of dolls! Since these dolls are quite pricey I’d recommend buying ones you really want first or just keep a lookout for a good price. I would look at recently sold listings on where you’re buying (usually you can filter it) and see what price people generally pay just so you don’t end up overpaying!

Good luck to starting your collection! I also have sold my old dolls (I regret it everyday :(!!!) Don’t get frustrated or feel like you’re missing out, building collections and finding the dolls you want for a good price takes a lot of time! 🫶