I just noticed something while rewatching both the E3 footage and the new trailer: some prices have been reduced.
In the E3 build, the flimsy fishing rod and net were around 300 bells and the flimsy watering can was 1200 bells in Timmy's shop.
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In the new trailer, it seems they reduced the price of those tools: flimsy fishing rod and net are now 200 bells, while the flimsy watering can is 800 bells.
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It's actually nice to see they're balancing money shenanigans, hopefully they'll continue to improve on it to make it not too easy but also not too punishing, especially because we don't know (or at least I don't) if the resources are limited per day or something.