An unlocked gate is only an invitation to test, not proof that the next area is better for your current setup. The move makes sense when the next area's locker prices, item weight, and selling pressure no longer break your auction loop. Higher-value areas can push you into more expensive lockers, heavier items, and tougher choices about what to carry home.
Cash is the first check before moving up. A new area run needs enough money to join the auction, stop bidding when the price gets too high, and still have enough left for the next attempt. If winning one locker leaves you broke, the current area is still the better place to build a buffer through controlled wins.
Vehicle space is the second check. A new area is worse than the starter area when the best items do not fit in your haul plan. If you often leave strong items behind in the current area, a harder area will make that problem louder. More carry space or stricter loading priority should come before pricier lockers.
Shop pressure is the third check. A better area can send more valuable or more numerous items back to your base, but value only helps after the items sell. If your shop already feels clogged, area progression can trap more of your cash in unsold inventory. Selling space or clearing speed should improve before the locker prices rise.
The first new-area run works best as a test. A conservative bid shows whether the full trip still works: auction price, loading time, drive back, selling time, and final cash. If the run produces profit without straining your balance, the area is worth more testing. If the run creates a bottleneck, the safer area is still the better upgrade path.
Area names and route orders are not exact requirements. A path toward later areas such as Shipyard still comes down to one player decision: move forward when the new area's locker prices and item weight no longer break your auction loop.