Citizen Promaster Eco-Drive Ecozilla BJ8050 (BJ8050, BJ8050-08E, BJ8050-59E) , Current Prices, JDM Listings, Market Analysis
The Citizen Promaster Eco-Drive Ecozilla BJ8050 is a dive-oriented tool watch built around Citizen's solar charging technology and, depending on variant, an Aqualand depth gauge function that sets it apart from standard Promaster divers. It appears across three reference numbers , BJ8050, BJ8050-08E, and BJ8050-59E , with variant-level differences that can affect demand and pricing. Tonbo tracks this model because JDM supply is meaningfully active and the US secondary market shows a persistent price gap that creates periodic buying opportunities. At a current US median of $320, the BJ8050 sits in an accessible range for serious tool watch buyers.
Current US Market Value
The Citizen Promaster Eco-Drive Ecozilla BJ8050 price on the US secondary market currently sits at a median of $320, with the middle half of observed transactions falling between $250 and $390. That spread reflects genuine variance in condition and reference variant rather than erratic demand. It is worth noting that this pricing picture is drawn from a sample of 21 comparable transactions, which Tonbo classifies as limited comps (🟡). That means the median is directionally useful but should not be treated as a tight benchmark. A single outlier listing in either direction can shift the apparent range more than it would in a deeper dataset. If you are evaluating BJ8050 price against a specific listing, condition grading and reference suffix matter more here than they would for a model with hundreds of comps behind it.
Active JDM Listings
Japanese market activity for the BJ8050 has been notably clustered, with multiple listings appearing on a single day across different platforms. The spread in asking prices is wide, suggesting sellers are not anchoring to a shared reference point, which creates both risk and opportunity for buyers who understand the US market position. Recent listings include one outlier priced significantly above the US median, which warrants scrutiny on condition and completeness before any import calculation. If you are looking to buy BJ8050 Japan listings at a discount, the lower end of current Japanese asking prices is where the math starts to work.
- ¥100,000 on Mercari (condition unspecified)
- ¥66,000 on Mercari (condition unspecified)
- ¥50,000 on Mercari (condition unspecified)
- ¥48,000 on Yahoo Flea Market (described as no noticeable scratches or stains)
- ¥48,000 on a Japanese marketplace platform (excellent condition)
The ¥5,590 listing also appeared but is priced at a level that demands caution , incomplete watches, non-functional solar cells, or parts-only units often surface at that price tier for this model category.
Recent Alert History
No strict or opportunity alerts have fired for the Citizen Promaster Eco-Drive Ecozilla BJ8050 in the past 90 days through Tonbo's signals system. That does not mean the model is without value as a target , it reflects that the algorithmic thresholds for a confirmed buy signal have not been met in this window. Given the limited comp base, the system requires more pricing confidence before surfacing a formal alert. Monitoring this model directly is the more appropriate posture right now rather than waiting for an automated signal to fire.
Japan vs. US Price Gap
The BJ8050 sees consistent JDM supply partly because Citizen released Ecozilla variants primarily for the Japanese domestic market, meaning used units cycle through Japanese resale platforms at a higher rate than on US platforms. When Japanese asking prices land in the ¥48,000 to ¥66,000 range and clear condition is confirmed, the landed cost after shipping and import fees can still leave meaningful margin against the US median. The primary risk factor here is the Aqualand depth gauge function , this is a mechanical component with its own failure modes, and a non-functional depth gauge can significantly reduce resale value in the US market where buyers specifically seek that feature. Comp thinness compounds this, since a functional versus non-functional unit may look similar in price data but represents a very different asset. Browse current value-flagged listings at Tonbo deals to see where this model surfaces against screened comps.
Get Real-Time Alerts for Citizen Promaster Eco-Drive Ecozilla BJ8050
Tonbo monitors JDM platforms daily for the BJ8050-08E, BJ8050-59E, and core BJ8050 reference. When a listing clears condition and price thresholds against the US market, subscribers get an alert before the listing ages. If you are serious about finding BJ8050 for sale at a price that makes sense, paid alert tiers are available at tonbomarket.com/pricing. The free newsletter at tonbomarket.com covers broader JDM market trends and is a useful starting point if you want to understand how this model fits into the wider Promaster and Eco-Drive secondary market before committing to a specific watch.