BB9

Legendary Astromech

BB9 is a Legendary Astromech droid in Star Wars: Droid Tycoon. Full buy cost, sell value, credits-per-second, and rebirth requirements at every variant.

Variants & economy

Buy / craft cost, the chips to upgrade into each tier, earnings, and what it sells back for. Sell chips double with BB-8 equipped.

Variant	Buy / craft	Upgrade	Earns	Sell (credits)	Sell (chips)
Default	28M	—	1.3k/s	19.6M	—
Gold	112M	400 chips	2.6k/s	78.4M	84
Diamond	224M	1,200 chips	5.2k/s	157M	87
Rainbow	448M	4,000 chips	10.4k/s	314M	90
Beskar	11.2B	12,000 chips	31.2k/s	7.84B	93

Each tier doubles the last; Beskar breaks the pattern (×1.5 over Rainbow for Commons/Rares, ×4.25 for Epics, ×3 for Legendaries). Credit sell value is ~70% of buy cost. Buy prices apply on the trade row — including Beskar, which can't be bought anywhere else. Numbers reflect the current balance patch.

Specialist placement

BB9 is a Astromech droid — put it to work in the Astromech area for a free +10% to its credits. Most players leave droids scattered in the wrong sections and quietly lose that bonus.

Rebirth requirements

Since the June 9 update, requirements cycle through four paths, one per Super Rebirth (dev-confirmed: 1→2→3→4, then repeat) — all four are now mapped. Listed variant or higher — a higher variant always satisfies a lower-variant requirement.

Path 1 — first run

Path 2 — after 1st Super Rebirth

Path 3 — after 2nd Super Rebirth

Path 4 — after 3rd Super Rebirth

Tip: the highest variant asked for across all four paths is Beskar. Get BB9 to that tier once and every requirement is covered for good.

See the Droidex guide for earnings mechanics and Flawless odds, the Rebirth ladder for the full gate list, and Strategies for chip farming and the Sandcrawler timers.